390649260 has 24 divisors (see below), whose sum is σ = 1093818096. Its totient is φ = 104173120.

The previous prime is 390649247. The next prime is 390649283. The reversal of 390649260 is 62946093.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3255351 + ... + 3255470.

It is an arithmetic number, because the mean of its divisors is an integer number (45575754).

Almost surely, 2^390649260 is an apocalyptic number.

390649260 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

390649260 is an abundant number, since it is smaller than the sum of its proper divisors (703168836).

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

390649260 is a wasteful number, since it uses less digits than its factorization.

390649260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6510833 (or 6510831 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 390649260 is about 19764.8491013719. The cubic root of 390649260 is about 731.0195673963.

The spelling of 390649260 in words is "three hundred ninety million, six hundred forty-nine thousand, two hundred sixty".