396172512 has 48 divisors (see below), whose sum is σ = 1155505680. Its totient is φ = 132057216.

The previous prime is 396172501. The next prime is 396172531. The reversal of 396172512 is 215271693.

396172512 is a `hidden beast` number, since 3 + 9 + 617 + 25 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 228403 + ... + 230130.

It is an arithmetic number, because the mean of its divisors is an integer number (24073035).

Almost surely, 2^396172512 is an apocalyptic number.

396172512 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

396172512 is an abundant number, since it is smaller than the sum of its proper divisors (759333168).

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

396172512 is a wasteful number, since it uses less digits than its factorization.

396172512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458552 (or 458538 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 396172512 is about 19904.0827972554. The cubic root of 396172512 is about 734.4486660902.

The spelling of 396172512 in words is "three hundred ninety-six million, one hundred seventy-two thousand, five hundred twelve".