390856080 has 40 divisors (see below), whose sum is σ = 1211654592. Its totient is φ = 104228224.

The previous prime is 390856069. The next prime is 390856093. The reversal of 390856080 is 80658093.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814044 + ... + 814523.

Almost surely, 2^390856080 is an apocalyptic number.

390856080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

390856080 is an abundant number, since it is smaller than the sum of its proper divisors (820798512).

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

390856080 is a wasteful number, since it uses less digits than its factorization.

390856080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628583 (or 1628577 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 390856080 is about 19770.0804247226. The cubic root of 390856080 is about 731.1485516361.

The spelling of 390856080 in words is "three hundred ninety million, eight hundred fifty-six thousand, eighty".