13907257 has 16 divisors (see below), whose sum is σ = 17379712. Its totient is φ = 10834560.

The previous prime is 13907237. The next prime is 13907261. The reversal of 13907257 is 75270931.

13907257 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13907257 - 2¹⁵ = 13874489 is a prime.

13907257 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (13907237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4957 + ... + 7237.

It is an arithmetic number, because the mean of its divisors is an integer number (1086232).

Almost surely, 2^13907257 is an apocalyptic number.

It is an amenable number.

13907257 is a deficient number, since it is larger than the sum of its proper divisors (3472455).

13907257 is a wasteful number, since it uses less digits than its factorization.

13907257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 13907257 is about 3729.2434889666. The cubic root of 13907257 is about 240.4808473070.

It can be divided in two parts, 139072 and 57, that added together give a square (139129 = 373²).

The spelling of 13907257 in words is "thirteen million, nine hundred seven thousand, two hundred fifty-seven".