390522140 has 24 divisors (see below), whose sum is σ = 820722672. Its totient is φ = 156089600.

The previous prime is 390522133. The next prime is 390522191. The reversal of 390522140 is 41225093.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22292 + ... + 35748.

It is an arithmetic number, because the mean of its divisors is an integer number (34196778).

Almost surely, 2^390522140 is an apocalyptic number.

It is an amenable number.

390522140 is an abundant number, since it is smaller than the sum of its proper divisors (430200532).

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

390522140 is a wasteful number, since it uses less digits than its factorization.

390522140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14917 (or 14915 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 390522140 is about 19761.6330296866. The cubic root of 390522140 is about 730.9402658348.

The spelling of 390522140 in words is "three hundred ninety million, five hundred twenty-two thousand, one hundred forty".