406572940 has 12 divisors (see below), whose sum is σ = 853803216. Its totient is φ = 162629168.

The previous prime is 406572919. The next prime is 406572949. The reversal of 406572940 is 49275604.

It is a self number, because there is not a number n which added to its sum of digits gives 406572940.

It is not an unprimeable number, because it can be changed into a prime (406572949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10164304 + ... + 10164343.

It is an arithmetic number, because the mean of its divisors is an integer number (71150268).

Almost surely, 2^406572940 is an apocalyptic number.

It is an amenable number.

406572940 is an abundant number, since it is smaller than the sum of its proper divisors (447230276).

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

406572940 is a wasteful number, since it uses less digits than its factorization.

406572940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20328656 (or 20328654 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 406572940 is about 20163.6539347411. The cubic root of 406572940 is about 740.8202130171.

The spelling of 406572940 in words is "four hundred six million, five hundred seventy-two thousand, nine hundred forty".