13157816 has 16 divisors (see below), whose sum is σ = 28195440. Its totient is φ = 5639040.

The previous prime is 13157803. The next prime is 13157819. The reversal of 13157816 is 61875131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13157819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117425 + ... + 117536.

It is an arithmetic number, because the mean of its divisors is an integer number (1762215).

Almost surely, 2^13157816 is an apocalyptic number.

It is an amenable number.

13157816 is an abundant number, since it is smaller than the sum of its proper divisors (15037624).

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

13157816 is a wasteful number, since it uses less digits than its factorization.

13157816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234974 (or 234970 counting only the distinct ones).

The product of its digits is 5040, while the sum is 32.

The square root of 13157816 is about 3627.3703974091. The cubic root of 13157816 is about 236.0811269493.

The spelling of 13157816 in words is "thirteen million, one hundred fifty-seven thousand, eight hundred sixteen".