390641552 has 20 divisors (see below), whose sum is σ = 864992256. Its totient is φ = 167417760.

The previous prime is 390641551. The next prime is 390641609. The reversal of 390641552 is 255146093.

It is not an unprimeable number, because it can be changed into a prime (390641551) 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, 1743824 + ... + 1744047.

Almost surely, 2^390641552 is an apocalyptic number.

It is an amenable number.

390641552 is an abundant number, since it is smaller than the sum of its proper divisors (474350704).

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

390641552 is a wasteful number, since it uses less digits than its factorization.

390641552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487886 (or 3487880 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 390641552 is about 19764.6541077753. The cubic root of 390641552 is about 731.0147593869.

It can be divided in two parts, 390641 and 552, that added together give a palindrome (391193).

The spelling of 390641552 in words is "three hundred ninety million, six hundred forty-one thousand, five hundred fifty-two".