390604720 has 40 divisors (see below), whose sum is σ = 990717840. Its totient is φ = 142037760.

The previous prime is 390604693. The next prime is 390604729. The reversal of 390604720 is 27406093.

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

It is not an unprimeable number, because it can be changed into a prime (390604729) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 221055 + ... + 222814.

It is an arithmetic number, because the mean of its divisors is an integer number (24767946).

Almost surely, 2^390604720 is an apocalyptic number.

It is an amenable number.

390604720 is an abundant number, since it is smaller than the sum of its proper divisors (600113120).

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

390604720 is a wasteful number, since it uses less digits than its factorization.

390604720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443893 (or 443887 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 390604720 is about 19763.7223214657. The cubic root of 390604720 is about 730.9917838639.

The spelling of 390604720 in words is "three hundred ninety million, six hundred four thousand, seven hundred twenty".