520011390 has 16 divisors (see below), whose sum is σ = 1248027408. Its totient is φ = 138669696.

The previous prime is 520011389. The next prime is 520011403. The reversal of 520011390 is 93110025.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8666827 + ... + 8666886.

It is an arithmetic number, because the mean of its divisors is an integer number (78001713).

Almost surely, 2^520011390 is an apocalyptic number.

520011390 is an abundant number, since it is smaller than the sum of its proper divisors (728016018).

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

520011390 is a wasteful number, since it uses less digits than its factorization.

520011390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17333723.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 520011390 is about 22803.7582428862. The cubic root of 520011390 is about 804.1510229655.

The spelling of 520011390 in words is "five hundred twenty million, eleven thousand, three hundred ninety".