390284432 has 20 divisors (see below), whose sum is σ = 756539376. Its totient is φ = 195048480.

The previous prime is 390284423. The next prime is 390284437. The reversal of 390284432 is 234482093.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 390284392 and 390284401.

It is not an unprimeable number, because it can be changed into a prime (390284437) 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, 38807 + ... + 47817.

Almost surely, 2^390284432 is an apocalyptic number.

It is an amenable number.

390284432 is a deficient number, since it is larger than the sum of its proper divisors (366254944).

390284432 is a wasteful number, since it uses less digits than its factorization.

390284432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11726 (or 11720 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 390284432 is about 19755.6177326856. The cubic root of 390284432 is about 730.7919297173.

The spelling of 390284432 in words is "three hundred ninety million, two hundred eighty-four thousand, four hundred thirty-two".