406464220 has 24 divisors (see below), whose sum is σ = 903785904. Its totient is φ = 153021696.

The previous prime is 406464209. The next prime is 406464221. The reversal of 406464220 is 22464604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406464221) 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, 597402 + ... + 598081.

It is an arithmetic number, because the mean of its divisors is an integer number (37657746).

Almost surely, 2^406464220 is an apocalyptic number.

It is an amenable number.

406464220 is an abundant number, since it is smaller than the sum of its proper divisors (497321684).

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

406464220 is a wasteful number, since it uses less digits than its factorization.

406464220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195509 (or 1195507 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 406464220 is about 20160.9578145484. The cubic root of 406464220 is about 740.7541739002.

The spelling of 406464220 in words is "four hundred six million, four hundred sixty-four thousand, two hundred twenty".