157990856 has 16 divisors (see below), whose sum is σ = 296448000. Its totient is φ = 78938064.

The previous prime is 157990853. The next prime is 157990867. The reversal of 157990856 is 658099751.

It is a happy number.

It is a super-2 number, since 2×157990856² = 49922221159225472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157990853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5945 + ... + 18743.

It is an arithmetic number, because the mean of its divisors is an integer number (18528000).

Almost surely, 2^157990856 is an apocalyptic number.

It is an amenable number.

157990856 is a deficient number, since it is larger than the sum of its proper divisors (138457144).

157990856 is a wasteful number, since it uses less digits than its factorization.

157990856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14348 (or 14344 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 50.

The square root of 157990856 is about 12569.4413559235. The cubic root of 157990856 is about 540.6015883521.

The spelling of 157990856 in words is "one hundred fifty-seven million, nine hundred ninety thousand, eight hundred fifty-six".