390033504 has 72 divisors (see below), whose sum is σ = 1267615440. Its totient is φ = 111437568.

The previous prime is 390033503. The next prime is 390033509. The reversal of 390033504 is 405330093.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×390033504² = 304252268485036032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390033503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94719 + ... + 98750.

It is an arithmetic number, because the mean of its divisors is an integer number (17605770).

Almost surely, 2^390033504 is an apocalyptic number.

It is an amenable number.

390033504 is an abundant number, since it is smaller than the sum of its proper divisors (877581936).

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

390033504 is a wasteful number, since it uses less digits than its factorization.

390033504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193492 (or 193481 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 390033504 is about 19749.2659104079. The cubic root of 390033504 is about 730.6352786050.

Adding to 390033504 its reverse (405330093), we get a palindrome (795363597).

The spelling of 390033504 in words is "three hundred ninety million, thirty-three thousand, five hundred four".