422573640 has 64 divisors (see below), whose sum is σ = 1285113600. Its totient is φ = 111140352.

The previous prime is 422573621. The next prime is 422573653. The reversal of 422573640 is 46375224.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15360 + ... + 32879.

It is an arithmetic number, because the mean of its divisors is an integer number (20079900).

Almost surely, 2^422573640 is an apocalyptic number.

422573640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422573640 is an abundant number, since it is smaller than the sum of its proper divisors (862539960).

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

422573640 is a wasteful number, since it uses less digits than its factorization.

422573640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48326 (or 48322 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 422573640 is about 20556.5960217153. The cubic root of 422573640 is about 750.4137805611.

The spelling of 422573640 in words is "four hundred twenty-two million, five hundred seventy-three thousand, six hundred forty".