396569520 has 200 divisors, whose sum is σ = 1450286640. Its totient is φ = 100154880.

The previous prime is 396569513. The next prime is 396569527. The reversal of 396569520 is 25965693.

396569520 is a `hidden beast` number, since 3 + 9 + 65 + 69 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (396569513) and next prime (396569527).

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

It is not an unprimeable number, because it can be changed into a prime (396569527) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 121510 + ... + 124730.

Almost surely, 2^396569520 is an apocalyptic number.

396569520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 396569520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725143320).

396569520 is an abundant number, since it is smaller than the sum of its proper divisors (1053717120).

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

396569520 is a wasteful number, since it uses less digits than its factorization.

396569520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265 (or 3250 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 45.

The square root of 396569520 is about 19914.0533292447. The cubic root of 396569520 is about 734.6939167007.

The spelling of 396569520 in words is "three hundred ninety-six million, five hundred sixty-nine thousand, five hundred twenty".