157990508 has 24 divisors (see below), whose sum is σ = 307359360. Its totient is φ = 70565760.

The previous prime is 157990499. The next prime is 157990541. The reversal of 157990508 is 805099751.

It is a happy number.

It is a super-2 number, since 2×157990508² = 49922001236196128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47393 + ... + 50616.

It is an arithmetic number, because the mean of its divisors is an integer number (12806640).

Almost surely, 2^157990508 is an apocalyptic number.

It is an amenable number.

157990508 is a deficient number, since it is larger than the sum of its proper divisors (149368852).

157990508 is a wasteful number, since it uses less digits than its factorization.

157990508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98057 (or 98055 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 157990508 is about 12569.4275128186. The cubic root of 157990508 is about 540.6011914315.

The spelling of 157990508 in words is "one hundred fifty-seven million, nine hundred ninety thousand, five hundred eight".