13057947 has 12 divisors (see below), whose sum is σ = 21556080. Its totient is φ = 7461648.

The previous prime is 13057943. The next prime is 13057973. The reversal of 13057947 is 74975031.

It is a happy number.

It is not a de Polignac number, because 13057947 - 2² = 13057943 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13057943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103572 + ... + 103697.

It is an arithmetic number, because the mean of its divisors is an integer number (1796340).

Almost surely, 2^13057947 is an apocalyptic number.

13057947 is a deficient number, since it is larger than the sum of its proper divisors (8498133).

13057947 is a wasteful number, since it uses less digits than its factorization.

13057947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207282 (or 207279 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 13057947 is about 3613.5781436133. The cubic root of 13057947 is about 235.4823170895.

The spelling of 13057947 in words is "thirteen million, fifty-seven thousand, nine hundred forty-seven".