390262872 has 64 divisors (see below), whose sum is σ = 999936000. Its totient is φ = 126887040.

The previous prime is 390262849. The next prime is 390262877. The reversal of 390262872 is 278262093.

It is a self number, because there is not a number n which added to its sum of digits gives 390262872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390262877) 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 15 ways as a sum of consecutive naturals, for example, 184879 + ... + 186977.

It is an arithmetic number, because the mean of its divisors is an integer number (15624000).

Almost surely, 2^390262872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390262872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499968000).

390262872 is an abundant number, since it is smaller than the sum of its proper divisors (609673128).

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

390262872 is a wasteful number, since it uses less digits than its factorization.

390262872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 390262872 is about 19755.0720575755. The cubic root of 390262872 is about 730.7784727247.

The spelling of 390262872 in words is "three hundred ninety million, two hundred sixty-two thousand, eight hundred seventy-two".