320386432 has 32 divisors (see below), whose sum is σ = 660286800. Its totient is φ = 154667520.

The previous prime is 320386399. The next prime is 320386463. The reversal of 320386432 is 234683023.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 320386394 and 320386403.

It is a congruent number.

It is an unprimeable number.

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, 39444 + ... + 46867.

Almost surely, 2^320386432 is an apocalyptic number.

320386432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320386432 is an abundant number, since it is smaller than the sum of its proper divisors (339900368).

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

320386432 is an equidigital number, since it uses as much as digits as its factorization.

320386432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86354 (or 86342 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 320386432 is about 17899.3416638713. The cubic root of 320386432 is about 684.2655968430.

The spelling of 320386432 in words is "three hundred twenty million, three hundred eighty-six thousand, four hundred thirty-two".