390627621220 has 12 divisors (see below), whose sum is σ = 820318004604. Its totient is φ = 156251048480.

The previous prime is 390627621199. The next prime is 390627621227. The reversal of 390627621220 is 22126726093.

It can be written as a sum of positive squares in 2 ways, for example, as 236096866404 + 154530754816 = 485898^2 + 393104^2 .

It is not an unprimeable number, because it can be changed into a prime (390627621227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9765690511 + ... + 9765690550.

It is an arithmetic number, because the mean of its divisors is an integer number (68359833717).

Almost surely, 2^390627621220 is an apocalyptic number.

It is an amenable number.

390627621220 is an abundant number, since it is smaller than the sum of its proper divisors (429690383384).

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

390627621220 is a wasteful number, since it uses less digits than its factorization.

390627621220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19531381070 (or 19531381068 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 390627621220 in words is "three hundred ninety billion, six hundred twenty-seven million, six hundred twenty-one thousand, two hundred twenty".