406815424 has 28 divisors (see below), whose sum is σ = 819331864. Its totient is φ = 200369664.

The previous prime is 406815401. The next prime is 406815427. The reversal of 406815424 is 424518604.

It is a self number, because there is not a number n which added to its sum of digits gives 406815424.

It is not an unprimeable number, because it can be changed into a prime (406815427) 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, 43149 + ... + 51724.

Almost surely, 2^406815424 is an apocalyptic number.

It is an amenable number.

406815424 is an abundant number, since it is smaller than the sum of its proper divisors (412516440).

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

406815424 is an equidigital number, since it uses as much as digits as its factorization.

406815424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94952 (or 94942 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 406815424 is about 20169.6659367477. The cubic root of 406815424 is about 740.9674611738.

The spelling of 406815424 in words is "four hundred six million, eight hundred fifteen thousand, four hundred twenty-four".