406426220 has 24 divisors (see below), whose sum is σ = 867963600. Its totient is φ = 159814592.

The previous prime is 406426219. The next prime is 406426247. The reversal of 406426220 is 22624604.

It is a self number, because there is not a number n which added to its sum of digits gives 406426220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171035 + ... + 173394.

It is an arithmetic number, because the mean of its divisors is an integer number (36165150).

Almost surely, 2^406426220 is an apocalyptic number.

It is an amenable number.

406426220 is an abundant number, since it is smaller than the sum of its proper divisors (461537380).

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

406426220 is a wasteful number, since it uses less digits than its factorization.

406426220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344497 (or 344495 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 406426220 is about 20160.0153769783. The cubic root of 406426220 is about 740.7310890181.

The spelling of 406426220 in words is "four hundred six million, four hundred twenty-six thousand, two hundred twenty".