422545312 has 72 divisors (see below), whose sum is σ = 985080096. Its totient is φ = 174768384.

The previous prime is 422545273. The next prime is 422545327. The reversal of 422545312 is 213545224.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187263 + ... + 189505.

It is an arithmetic number, because the mean of its divisors is an integer number (13681668).

Almost surely, 2^422545312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422545312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492540048).

422545312 is an abundant number, since it is smaller than the sum of its proper divisors (562534784).

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

422545312 is a wasteful number, since it uses less digits than its factorization.

422545312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318 (or 2281 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 422545312 is about 20555.9069855845. The cubic root of 422545312 is about 750.3970117311.

The spelling of 422545312 in words is "four hundred twenty-two million, five hundred forty-five thousand, three hundred twelve".