390863052 has 72 divisors (see below), whose sum is σ = 1005522336. Its totient is φ = 128001024.

The previous prime is 390863017. The next prime is 390863063. The reversal of 390863052 is 250368093.

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

It is a junction number, because it is equal to n+sod(n) for n = 390862998 and 390863016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 603793 + ... + 604439.

It is an arithmetic number, because the mean of its divisors is an integer number (13965588).

Almost surely, 2^390863052 is an apocalyptic number.

It is an amenable number.

390863052 is an abundant number, since it is smaller than the sum of its proper divisors (614659284).

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

390863052 is a wasteful number, since it uses less digits than its factorization.

390863052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 390863052 is about 19770.2567509883. The cubic root of 390863052 is about 731.1528989630.

The spelling of 390863052 in words is "three hundred ninety million, eight hundred sixty-three thousand, fifty-two".