405020226 has 64 divisors (see below), whose sum is σ = 932198400. Its totient is φ = 116271936.

The previous prime is 405020183. The next prime is 405020233. The reversal of 405020226 is 622020504.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97255 + ... + 101333.

It is an arithmetic number, because the mean of its divisors is an integer number (14565600).

Almost surely, 2^405020226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405020226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466099200).

405020226 is an abundant number, since it is smaller than the sum of its proper divisors (527178174).

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

405020226 is a wasteful number, since it uses less digits than its factorization.

405020226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 405020226 is about 20125.1143102344. The cubic root of 405020226 is about 739.8759385399.

The spelling of 405020226 in words is "four hundred five million, twenty thousand, two hundred twenty-six".