520138936 has 16 divisors (see below), whose sum is σ = 1032629040. Its totient is φ = 244771200.

The previous prime is 520138909. The next prime is 520138963. The reversal of 520138936 is 639831025.

It is an interprime number because it is at equal distance from previous prime (520138909) and next prime (520138963).

It is a junction number, because it is equal to n+sod(n) for n = 520138895 and 520138904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1912140 + ... + 1912411.

It is an arithmetic number, because the mean of its divisors is an integer number (64539315).

Almost surely, 2^520138936 is an apocalyptic number.

It is an amenable number.

520138936 is a deficient number, since it is larger than the sum of its proper divisors (512490104).

520138936 is a wasteful number, since it uses less digits than its factorization.

520138936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3824574 (or 3824570 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 520138936 is about 22806.5546718482. The cubic root of 520138936 is about 804.2167637447.

The spelling of 520138936 in words is "five hundred twenty million, one hundred thirty-eight thousand, nine hundred thirty-six".