520629858 has 24 divisors (see below), whose sum is σ = 1289179008. Its totient is φ = 148751352.

The previous prime is 520629847. The next prime is 520629871. The reversal of 520629858 is 858926025.

It is a super-2 number, since 2×520629858² = 542110898082200328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2065866 + ... + 2066117.

It is an arithmetic number, because the mean of its divisors is an integer number (53715792).

Almost surely, 2^520629858 is an apocalyptic number.

520629858 is an abundant number, since it is smaller than the sum of its proper divisors (768549150).

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

520629858 is a wasteful number, since it uses less digits than its factorization.

520629858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4131998 (or 4131995 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 520629858 is about 22817.3148727014. The cubic root of 520629858 is about 804.4696984445.

The spelling of 520629858 in words is "five hundred twenty million, six hundred twenty-nine thousand, eight hundred fifty-eight".