1520238864 has 20 divisors (see below), whose sum is σ = 3927283856. Its totient is φ = 506746272.

The previous prime is 1520238859. The next prime is 1520238871. The reversal of 1520238864 is 4688320251.

It is a super-2 number, since 2×1520238864² = 4622252407232020992, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 15835774 + ... + 15835869.

Almost surely, 2^1520238864 is an apocalyptic number.

It is an amenable number.

1520238864 is an abundant number, since it is smaller than the sum of its proper divisors (2407044992).

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

1520238864 is a wasteful number, since it uses less digits than its factorization.

1520238864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31671654 (or 31671648 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 1520238864 is about 38990.2406250590. The cubic root of 1520238864 is about 1149.8396409042.

The spelling of 1520238864 in words is "one billion, five hundred twenty million, two hundred thirty-eight thousand, eight hundred sixty-four".