8520990 has 32 divisors (see below), whose sum is σ = 20528640. Its totient is φ = 2263584.

The previous prime is 8520979. The next prime is 8521003. The reversal of 8520990 is 990258.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12847 + ... + 13493.

It is an arithmetic number, because the mean of its divisors is an integer number (641520).

Almost surely, 2^8520990 is an apocalyptic number.

8520990 is an abundant number, since it is smaller than the sum of its proper divisors (12007650).

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

8520990 is a wasteful number, since it uses less digits than its factorization.

8520990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 8520990 is about 2919.0734831450. The cubic root of 8520990 is about 204.2506051268.

The spelling of 8520990 in words is "eight million, five hundred twenty thousand, nine hundred ninety".