390900672 has 42 divisors (see below), whose sum is σ = 1120447848. Its totient is φ = 130300032.

The previous prime is 390900649. The next prime is 390900677. The reversal of 390900672 is 276009093.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390900677) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 338748 + ... + 339899.

Almost surely, 2^390900672 is an apocalyptic number.

390900672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

390900672 is an abundant number, since it is smaller than the sum of its proper divisors (729547176).

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

390900672 is a wasteful number, since it uses less digits than its factorization.

390900672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678665 (or 678652 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 390900672 is about 19771.2081573181. The cubic root of 390900672 is about 731.1763556780.

The spelling of 390900672 in words is "three hundred ninety million, nine hundred thousand, six hundred seventy-two".