27157907 has 12 divisors (see below), whose sum is σ = 31904496. Its totient is φ = 23047920.

The previous prime is 27157903. The next prime is 27157913. The reversal of 27157907 is 70975172.

It is not a de Polignac number, because 27157907 - 2² = 27157903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27157901) 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, 2357 + ... + 7737.

It is an arithmetic number, because the mean of its divisors is an integer number (2658708).

Almost surely, 2^27157907 is an apocalyptic number.

27157907 is a deficient number, since it is larger than the sum of its proper divisors (4746589).

27157907 is a wasteful number, since it uses less digits than its factorization.

27157907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498 (or 5491 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 27157907 is about 5211.3248795292. The cubic root of 27157907 is about 300.5837043018.

The spelling of 27157907 in words is "twenty-seven million, one hundred fifty-seven thousand, nine hundred seven".