157205864 has 8 divisors (see below), whose sum is σ = 294761010. Its totient is φ = 78602928.

The previous prime is 157205843. The next prime is 157205869. The reversal of 157205864 is 468502751.

157205864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 154803364 + 2402500 = 12442^2 + 1550^2 .

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

It is not an unprimeable number, because it can be changed into a prime (157205869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9825359 + ... + 9825374.

Almost surely, 2^157205864 is an apocalyptic number.

It is an amenable number.

157205864 is a deficient number, since it is larger than the sum of its proper divisors (137555146).

157205864 is a wasteful number, since it uses less digits than its factorization.

157205864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19650739 (or 19650735 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 157205864 is about 12538.1762629180. The cubic root of 157205864 is about 539.7047585899.

The spelling of 157205864 in words is "one hundred fifty-seven million, two hundred five thousand, eight hundred sixty-four".