157166920 has 16 divisors (see below), whose sum is σ = 353625660. Its totient is φ = 62866752.

The previous prime is 157166903. The next prime is 157166939. The reversal of 157166920 is 29661751.

It can be written as a sum of positive squares in 2 ways, for example, as 144336196 + 12830724 = 12014^2 + 3582^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 157166920.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1964547 + ... + 1964626.

Almost surely, 2^157166920 is an apocalyptic number.

157166920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157166920 is an abundant number, since it is smaller than the sum of its proper divisors (196458740).

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

157166920 is a wasteful number, since it uses less digits than its factorization.

157166920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929184 (or 3929180 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 157166920 is about 12536.6231497960. The cubic root of 157166920 is about 539.6601885859.

The spelling of 157166920 in words is "one hundred fifty-seven million, one hundred sixty-six thousand, nine hundred twenty".