396220 has 24 divisors (see below), whose sum is σ = 908208. Its totient is φ = 144000.

The previous prime is 396217. The next prime is 396239. The reversal of 396220 is 22693.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 396191 and 396200.

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, 681 + ... + 1120.

It is an arithmetic number, because the mean of its divisors is an integer number (37842).

2³⁹⁶²²⁰ is an apocalyptic number.

It is an amenable number.

396220 is an abundant number, since it is smaller than the sum of its proper divisors (511988).

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

396220 is a wasteful number, since it uses less digits than its factorization.

396220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 396220 is about 629.4600861055. The cubic root of 396220 is about 73.4478010297.

It can be divided in two parts, 396 and 220, that added together give a palindrome (616).

The spelling of 396220 in words is "three hundred ninety-six thousand, two hundred twenty".