396520 has 32 divisors (see below), whose sum is σ = 933120. Its totient is φ = 151360.

The previous prime is 396509. The next prime is 396523. The reversal of 396520 is 25693.

It is a super-2 number, since 2×396520² = 314456220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396523) 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, 705 + ... + 1135.

It is an arithmetic number, because the mean of its divisors is an integer number (29160).

2³⁹⁶⁵²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 396520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466560).

396520 is an abundant number, since it is smaller than the sum of its proper divisors (536600).

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

396520 is a wasteful number, since it uses less digits than its factorization.

396520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 396520 is about 629.6983404774. The cubic root of 396520 is about 73.4663334793.

Subtracting from 396520 its sum of digits (25), we obtain a triangular number (396495 = T₈₉₀).

The spelling of 396520 in words is "three hundred ninety-six thousand, five hundred twenty".