520138892 has 24 divisors (see below), whose sum is σ = 1120299936. Its totient is φ = 205769088.

The previous prime is 520138841. The next prime is 520138901. The reversal of 520138892 is 298831025.

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 7 ways as a sum of consecutive naturals, for example, 714113 + ... + 714840.

It is an arithmetic number, because the mean of its divisors is an integer number (46679164).

Almost surely, 2^520138892 is an apocalyptic number.

520138892 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

520138892 is an abundant number, since it is smaller than the sum of its proper divisors (600161044).

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

520138892 is a wasteful number, since it uses less digits than its factorization.

520138892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428977 (or 1428975 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 520138892 is about 22806.5537072132. The cubic root of 520138892 is about 804.2167410677.

The spelling of 520138892 in words is "five hundred twenty million, one hundred thirty-eight thousand, eight hundred ninety-two".