422615128 has 32 divisors (see below), whose sum is σ = 854582400. Its totient is φ = 194773248.

The previous prime is 422615111. The next prime is 422615197. The reversal of 422615128 is 821516224.

It is a self number, because there is not a number n which added to its sum of digits gives 422615128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81625 + ... + 86647.

It is an arithmetic number, because the mean of its divisors is an integer number (26705700).

Almost surely, 2^422615128 is an apocalyptic number.

It is an amenable number.

422615128 is an abundant number, since it is smaller than the sum of its proper divisors (431967272).

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

422615128 is a wasteful number, since it uses less digits than its factorization.

422615128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5851 (or 5847 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 422615128 is about 20557.6051134367. The cubic root of 422615128 is about 750.4383381334.

The spelling of 422615128 in words is "four hundred twenty-two million, six hundred fifteen thousand, one hundred twenty-eight".