520007998 has 8 divisors (see below), whose sum is σ = 821065320. Its totient is φ = 246319560.

The previous prime is 520007947. The next prime is 520008001. The reversal of 520007998 is 899700025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 520007998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6842173 + ... + 6842248.

It is an arithmetic number, because the mean of its divisors is an integer number (102633165).

Almost surely, 2^520007998 is an apocalyptic number.

520007998 is a deficient number, since it is larger than the sum of its proper divisors (301057322).

520007998 is a wasteful number, since it uses less digits than its factorization.

520007998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13684442.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 520007998 is about 22803.6838690594. The cubic root of 520007998 is about 804.1492744870.

The spelling of 520007998 in words is "five hundred twenty million, seven thousand, nine hundred ninety-eight".