422445020 has 12 divisors (see below), whose sum is σ = 887134584. Its totient is φ = 168978000.

The previous prime is 422445007. The next prime is 422445061. The reversal of 422445020 is 20544224.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10561106 + ... + 10561145.

It is an arithmetic number, because the mean of its divisors is an integer number (73927882).

Almost surely, 2^422445020 is an apocalyptic number.

It is an amenable number.

422445020 is an abundant number, since it is smaller than the sum of its proper divisors (464689564).

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

422445020 is a wasteful number, since it uses less digits than its factorization.

422445020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21122260 (or 21122258 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 422445020 is about 20553.4673473845. The cubic root of 422445020 is about 750.3376376079.

Adding to 422445020 its reverse (20544224), we get a palindrome (442989244).

The spelling of 422445020 in words is "four hundred twenty-two million, four hundred forty-five thousand, twenty".