398087712 has 72 divisors (see below), whose sum is σ = 1234986480. Its totient is φ = 120631680.

The previous prime is 398087707. The next prime is 398087731. The reversal of 398087712 is 217780893.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59662 + ... + 65997.

It is an arithmetic number, because the mean of its divisors is an integer number (17152590).

Almost surely, 2^398087712 is an apocalyptic number.

398087712 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

398087712 is an abundant number, since it is smaller than the sum of its proper divisors (836898768).

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

398087712 is a wasteful number, since it uses less digits than its factorization.

398087712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125686 (or 125675 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 398087712 is about 19952.1355248003. The cubic root of 398087712 is about 735.6302687696.

The spelling of 398087712 in words is "three hundred ninety-eight million, eighty-seven thousand, seven hundred twelve".