405765222 has 16 divisors (see below), whose sum is σ = 811743552. Its totient is φ = 135219560.

The previous prime is 405765203. The next prime is 405765223. The reversal of 405765222 is 222567504.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405765223) 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, 27073 + ... + 39299.

It is an arithmetic number, because the mean of its divisors is an integer number (50733972).

Almost surely, 2^405765222 is an apocalyptic number.

405765222 is an abundant number, since it is smaller than the sum of its proper divisors (405978330).

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

405765222 is a wasteful number, since it uses less digits than its factorization.

405765222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17763.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 405765222 is about 20143.6149188769. The cubic root of 405765222 is about 740.3293043733.

The spelling of 405765222 in words is "four hundred five million, seven hundred sixty-five thousand, two hundred twenty-two".