157157128 has 8 divisors (see below), whose sum is σ = 294669630. Its totient is φ = 78578560.

The previous prime is 157157087. The next prime is 157157159. The reversal of 157157128 is 821751751.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 90212004 + 66945124 = 9498^2 + 8182^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9822313 + ... + 9822328.

Almost surely, 2^157157128 is an apocalyptic number.

It is an amenable number.

157157128 is a deficient number, since it is larger than the sum of its proper divisors (137512502).

157157128 is a wasteful number, since it uses less digits than its factorization.

157157128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19644647 (or 19644643 counting only the distinct ones).

The product of its digits is 19600, while the sum is 37.

The square root of 157157128 is about 12536.2326079249. The cubic root of 157157128 is about 539.6489808366.

The spelling of 157157128 in words is "one hundred fifty-seven million, one hundred fifty-seven thousand, one hundred twenty-eight".