422640474 has 16 divisors (see below), whose sum is σ = 848498112. Its totient is φ = 140343968.

The previous prime is 422640473. The next prime is 422640499. The reversal of 422640474 is 474046224.

It is not an unprimeable number, because it can be changed into a prime (422640473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132339 + ... + 135494.

It is an arithmetic number, because the mean of its divisors is an integer number (53031132).

Almost surely, 2^422640474 is an apocalyptic number.

422640474 is an abundant number, since it is smaller than the sum of its proper divisors (425857638).

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

422640474 is a wasteful number, since it uses less digits than its factorization.

422640474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268101.

The product of its (nonzero) digits is 43008, while the sum is 33.

The square root of 422640474 is about 20558.2215670520. The cubic root of 422640474 is about 750.4533401440.

Adding to 422640474 its reverse (474046224), we get a palindrome (896686698).

The spelling of 422640474 in words is "four hundred twenty-two million, six hundred forty thousand, four hundred seventy-four".