422563390 has 16 divisors (see below), whose sum is σ = 805356432. Its totient is φ = 159082624.

The previous prime is 422563381. The next prime is 422563423. The reversal of 422563390 is 93365224.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1242664 + ... + 1243003.

It is an arithmetic number, because the mean of its divisors is an integer number (50334777).

Almost surely, 2^422563390 is an apocalyptic number.

422563390 is a deficient number, since it is larger than the sum of its proper divisors (382793042).

422563390 is a wasteful number, since it uses less digits than its factorization.

422563390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485691.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 422563390 is about 20556.3467084986. The cubic root of 422563390 is about 750.4077131347.

The spelling of 422563390 in words is "four hundred twenty-two million, five hundred sixty-three thousand, three hundred ninety".