422973690 has 32 divisors (see below), whose sum is σ = 1024128576. Its totient is φ = 111793920.

The previous prime is 422973647. The next prime is 422973697. The reversal of 422973690 is 96379224.

It is a happy number.

It is a super-2 number, since 2×422973690² = 357813484864432200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (422973697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58996 + ... + 65775.

It is an arithmetic number, because the mean of its divisors is an integer number (32004018).

Almost surely, 2^422973690 is an apocalyptic number.

422973690 is an abundant number, since it is smaller than the sum of its proper divisors (601154886).

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

422973690 is a wasteful number, since it uses less digits than its factorization.

422973690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124894.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 422973690 is about 20566.3241732693. The cubic root of 422973690 is about 750.6505111727.

The spelling of 422973690 in words is "four hundred twenty-two million, nine hundred seventy-three thousand, six hundred ninety".