396775320 has 32 divisors (see below), whose sum is σ = 1190326320. Its totient is φ = 105806720.

The previous prime is 396775307. The next prime is 396775321. The reversal of 396775320 is 23577693.

It is a happy number.

It is a super-2 number, since 2×396775320² = 314861309122204800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396775321) 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, 1653111 + ... + 1653350.

Almost surely, 2^396775320 is an apocalyptic number.

396775320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

396775320 is an abundant number, since it is smaller than the sum of its proper divisors (793551000).

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

396775320 is a wasteful number, since it uses less digits than its factorization.

396775320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306475 (or 3306471 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 42.

The square root of 396775320 is about 19919.2198642417. The cubic root of 396775320 is about 734.8209846781.

The spelling of 396775320 in words is "three hundred ninety-six million, seven hundred seventy-five thousand, three hundred twenty".