520803136 has 28 divisors (see below), whose sum is σ = 1181108128. Its totient is φ = 223201152.

The previous prime is 520803119. The next prime is 520803221. The reversal of 520803136 is 631308025.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 580806 + ... + 581701.

Almost surely, 2^520803136 is an apocalyptic number.

520803136 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

520803136 is an abundant number, since it is smaller than the sum of its proper divisors (660304992).

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

520803136 is a wasteful number, since it uses less digits than its factorization.

520803136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162526 (or 1162516 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 520803136 is about 22821.1116293663. Note that the first 3 decimals coincide. The cubic root of 520803136 is about 804.5589374283.

The spelling of 520803136 in words is "five hundred twenty million, eight hundred three thousand, one hundred thirty-six".