390250720 has 24 divisors (see below), whose sum is σ = 921967704. Its totient is φ = 156100224.

The previous prime is 390250717. The next prime is 390250727. The reversal of 390250720 is 27052093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390250727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1219374 + ... + 1219693.

It is an arithmetic number, because the mean of its divisors is an integer number (38415321).

Almost surely, 2^390250720 is an apocalyptic number.

It is an amenable number.

390250720 is an abundant number, since it is smaller than the sum of its proper divisors (531716984).

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

390250720 is a wasteful number, since it uses less digits than its factorization.

390250720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439082 (or 2439074 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 390250720 is about 19754.7644885987. The cubic root of 390250720 is about 730.7708876559.

The spelling of 390250720 in words is "three hundred ninety million, two hundred fifty thousand, seven hundred twenty".