520436736 has 132 divisors (see below), whose sum is σ = 1516827000. Its totient is φ = 171859968.

The previous prime is 520436723. The next prime is 520436789. The reversal of 520436736 is 637634025.

520436736 is a `hidden beast` number, since 520 + 43 + 67 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 520436736.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 1372995 + ... + 1373373.

Almost surely, 2^520436736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520436736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (758413500).

520436736 is an abundant number, since it is smaller than the sum of its proper divisors (996390264).

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

520436736 is a wasteful number, since it uses less digits than its factorization.

520436736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The square root of 520436736 is about 22813.0825624246. The cubic root of 520436736 is about 804.3702163726.

The spelling of 520436736 in words is "five hundred twenty million, four hundred thirty-six thousand, seven hundred thirty-six".