396972632 has 32 divisors (see below), whose sum is σ = 852556320. Its totient is φ = 169751040.

The previous prime is 396972623. The next prime is 396972637. The reversal of 396972632 is 236279693.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396972637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18128 + ... + 33504.

It is an arithmetic number, because the mean of its divisors is an integer number (26642385).

Almost surely, 2^396972632 is an apocalyptic number.

It is an amenable number.

396972632 is an abundant number, since it is smaller than the sum of its proper divisors (455583688).

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

396972632 is a wasteful number, since it uses less digits than its factorization.

396972632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15851 (or 15847 counting only the distinct ones).

The product of its digits is 734832, while the sum is 47.

The square root of 396972632 is about 19924.1720530616. The cubic root of 396972632 is about 734.9427706223.

The spelling of 396972632 in words is "three hundred ninety-six million, nine hundred seventy-two thousand, six hundred thirty-two".