396544680 has 128 divisors (see below), whose sum is σ = 1510675200. Its totient is φ = 90637056.

The previous prime is 396544627. The next prime is 396544699. The reversal of 396544680 is 86445693.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18667 + ... + 33786.

It is an arithmetic number, because the mean of its divisors is an integer number (11802150).

Almost surely, 2^396544680 is an apocalyptic number.

396544680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

396544680 is an abundant number, since it is smaller than the sum of its proper divisors (1114130520).

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

396544680 is a wasteful number, since it uses less digits than its factorization.

396544680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52480 (or 52470 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 396544680 is about 19913.4296393163. The cubic root of 396544680 is about 734.6785766598.

The spelling of 396544680 in words is "three hundred ninety-six million, five hundred forty-four thousand, six hundred eighty".