408866220 has 72 divisors (see below), whose sum is σ = 1417407264. Its totient is φ = 93454848.

The previous prime is 408866219. The next prime is 408866279. The reversal of 408866220 is 22668804.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160989 + ... + 163508.

It is an arithmetic number, because the mean of its divisors is an integer number (19686212).

Almost surely, 2^408866220 is an apocalyptic number.

It is an amenable number.

408866220 is an abundant number, since it is smaller than the sum of its proper divisors (1008541044).

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

408866220 is a wasteful number, since it uses less digits than its factorization.

408866220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324519 (or 324514 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 408866220 is about 20220.4406480175. The cubic root of 408866220 is about 742.2104710704.

The spelling of 408866220 in words is "four hundred eight million, eight hundred sixty-six thousand, two hundred twenty".