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13109460 = 22357513
BaseRepresentation
bin110010000000…
…100011010100
3220200000210120
4302000203110
511324000320
61144551540
7216300000
oct62004324
926600716
1013109460
117444371
1244825b0
13293cca0
141a53700
15123e440
hexc808d4

13109460 has 144 divisors (see below), whose sum is σ = 46118016. Its totient is φ = 2765952.

The previous prime is 13109443. The next prime is 13109461. The reversal of 13109460 is 6490131.

It is a self number, because there is not a number n which added to its sum of digits gives 13109460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13109461) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1008414 + ... + 1008426.

It is an arithmetic number, because the mean of its divisors is an integer number (320264).

Almost surely, 213109460 is an apocalyptic number.

13109460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13109460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23059008).

13109460 is an abundant number, since it is smaller than the sum of its proper divisors (33008556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13109460 is an equidigital number, since it uses as much as digits as its factorization.

13109460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 13109460 is about 3620.6988275746. The cubic root of 13109460 is about 235.7915664219.

Adding to 13109460 its reverse (6490131), we get a palindrome (19599591).

The spelling of 13109460 in words is "thirteen million, one hundred nine thousand, four hundred sixty".

Divisors: 1 2 3 4 5 6 7 10 12 13 14 15 20 21 26 28 30 35 39 42 49 52 60 65 70 78 84 91 98 105 130 140 147 156 182 195 196 210 245 260 273 294 343 364 390 420 455 490 546 588 637 686 735 780 910 980 1029 1092 1274 1365 1372 1470 1715 1820 1911 2058 2401 2548 2730 2940 3185 3430 3822 4116 4459 4802 5145 5460 6370 6860 7203 7644 8918 9555 9604 10290 12005 12740 13377 14406 16807 17836 19110 20580 22295 24010 26754 28812 31213 33614 36015 38220 44590 48020 50421 53508 62426 66885 67228 72030 84035 89180 93639 100842 124852 133770 144060 156065 168070 187278 201684 218491 252105 267540 312130 336140 374556 436982 468195 504210 624260 655473 873964 936390 1008420 1092455 1310946 1872780 2184910 2621892 3277365 4369820 6554730 13109460