396746880 has 64 divisors (see below), whose sum is σ = 1264636800. Its totient is φ = 105798656.

The previous prime is 396746869. The next prime is 396746921. The reversal of 396746880 is 88647693.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101400 + ... + 105239.

It is an arithmetic number, because the mean of its divisors is an integer number (19759950).

Almost surely, 2^396746880 is an apocalyptic number.

396746880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

396746880 is an abundant number, since it is smaller than the sum of its proper divisors (867889920).

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

396746880 is a wasteful number, since it uses less digits than its factorization.

396746880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206661 (or 206649 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 396746880 is about 19918.5059680690. The cubic root of 396746880 is about 734.8034274637.

The spelling of 396746880 in words is "three hundred ninety-six million, seven hundred forty-six thousand, eight hundred eighty".