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11321660 = 2257176771
BaseRepresentation
bin101011001100…
…000100111100
3210022012101202
4223030010330
510344243120
61042355032
7165142520
oct53140474
923265352
1011321660
116433149
12395ba78
13246530c
141709d80
15ed9875
hexacc13c

11321660 has 96 divisors (see below), whose sum is σ = 29611008. Its totient is φ = 3548160.

The previous prime is 11321659. The next prime is 11321671. The reversal of 11321660 is 6612311.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159425 + ... + 159495.

It is an arithmetic number, because the mean of its divisors is an integer number (308448).

Almost surely, 211321660 is an apocalyptic number.

11321660 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 11321660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14805504).

11321660 is an abundant number, since it is smaller than the sum of its proper divisors (18289348).

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

11321660 is a wasteful number, since it uses less digits than its factorization.

11321660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 11321660 is about 3364.7674511027. The cubic root of 11321660 is about 224.5449899335.

Adding to 11321660 its reverse (6612311), we get a palindrome (17933971).

The spelling of 11321660 in words is "eleven million, three hundred twenty-one thousand, six hundred sixty".

Divisors: 1 2 4 5 7 10 14 17 20 28 34 35 67 68 70 71 85 119 134 140 142 170 238 268 284 335 340 355 469 476 497 595 670 710 938 994 1139 1190 1207 1340 1420 1876 1988 2278 2345 2380 2414 2485 4556 4690 4757 4828 4970 5695 6035 7973 8449 9380 9514 9940 11390 12070 15946 16898 19028 22780 23785 24140 31892 33299 33796 39865 42245 47570 66598 79730 80869 84490 95140 133196 159460 161738 166495 168980 323476 332990 404345 566083 665980 808690 1132166 1617380 2264332 2830415 5660830 11321660