320447460 has 48 divisors (see below), whose sum is σ = 898119936. Its totient is φ = 85370112.

The previous prime is 320447459. The next prime is 320447497. The reversal of 320447460 is 64744023.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 84117 + ... + 87843.

It is an arithmetic number, because the mean of its divisors is an integer number (18710832).

Almost surely, 2^320447460 is an apocalyptic number.

320447460 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320447460 is an abundant number, since it is smaller than the sum of its proper divisors (577672476).

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

320447460 is a wasteful number, since it uses less digits than its factorization.

320447460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5172 (or 5170 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 320447460 is about 17901.0463381334. The cubic root of 320447460 is about 684.3090409524.

The spelling of 320447460 in words is "three hundred twenty million, four hundred forty-seven thousand, four hundred sixty".