390502226 has 32 divisors (see below), whose sum is σ = 638945280. Its totient is φ = 178516800.

The previous prime is 390502187. The next prime is 390502237. The reversal of 390502226 is 622205093.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82196 + ... + 86816.

It is an arithmetic number, because the mean of its divisors is an integer number (19967040).

Almost surely, 2^390502226 is an apocalyptic number.

390502226 is a deficient number, since it is larger than the sum of its proper divisors (248443054).

390502226 is a wasteful number, since it uses less digits than its factorization.

390502226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4730.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 390502226 is about 19761.1291681422. The cubic root of 390502226 is about 730.9278412794.

The spelling of 390502226 in words is "three hundred ninety million, five hundred two thousand, two hundred twenty-six".