422540428 has 12 divisors (see below), whose sum is σ = 742393512. Its totient is φ = 210428000.

The previous prime is 422540413. The next prime is 422540441. The reversal of 422540428 is 824045224.

It is a self number, because there is not a number n which added to its sum of digits gives 422540428.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209425 + ... + 211432.

It is an arithmetic number, because the mean of its divisors is an integer number (61866126).

Almost surely, 2^422540428 is an apocalyptic number.

It is an amenable number.

422540428 is a deficient number, since it is larger than the sum of its proper divisors (319853084).

422540428 is a wasteful number, since it uses less digits than its factorization.

422540428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421112 (or 421110 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

The square root of 422540428 is about 20555.7881872722. The cubic root of 422540428 is about 750.3941205594.

The spelling of 422540428 in words is "four hundred twenty-two million, five hundred forty thousand, four hundred twenty-eight".