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13061740 = 2251937929
BaseRepresentation
bin110001110100…
…111001101100
3220120121100011
4301310321230
511320433430
61143543004
7216010606
oct61647154
926517304
1013061740
11741152a
12445aa64
132924353
141a40176
15123022a
hexc74e6c

13061740 has 48 divisors (see below), whose sum is σ = 29685600. Its totient is φ = 4810752.

The previous prime is 13061731. The next prime is 13061743. The reversal of 13061740 is 4716031.

It is not an unprimeable number, because it can be changed into a prime (13061743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13596 + ... + 14524.

It is an arithmetic number, because the mean of its divisors is an integer number (618450).

Almost surely, 213061740 is an apocalyptic number.

13061740 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 13061740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14842800).

13061740 is an abundant number, since it is smaller than the sum of its proper divisors (16623860).

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

13061740 is a wasteful number, since it uses less digits than its factorization.

13061740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 13061740 is about 3614.1029315724. The cubic root of 13061740 is about 235.5051154146.

Adding to 13061740 its reverse (4716031), we get a palindrome (17777771).

The spelling of 13061740 in words is "thirteen million, sixty-one thousand, seven hundred forty".

Divisors: 1 2 4 5 10 19 20 37 38 74 76 95 148 185 190 370 380 703 740 929 1406 1858 2812 3515 3716 4645 7030 9290 14060 17651 18580 34373 35302 68746 70604 88255 137492 171865 176510 343730 353020 653087 687460 1306174 2612348 3265435 6530870 13061740