16856157 has 16 divisors (see below), whose sum is σ = 23336960. Its totient is φ = 10810800.

The previous prime is 16856153. The next prime is 16856159. The reversal of 16856157 is 75165861.

It is not a de Polignac number, because 16856157 - 2² = 16856153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16856153) 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, 19194 + ... + 20052.

It is an arithmetic number, because the mean of its divisors is an integer number (1458560).

Almost surely, 2^16856157 is an apocalyptic number.

It is an amenable number.

16856157 is a deficient number, since it is larger than the sum of its proper divisors (6480803).

16856157 is a wasteful number, since it uses less digits than its factorization.

16856157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104.

The product of its digits is 50400, while the sum is 39.

The square root of 16856157 is about 4105.6250437662. The cubic root of 16856157 is about 256.4008865878.

The spelling of 16856157 in words is "sixteen million, eight hundred fifty-six thousand, one hundred fifty-seven".