422726816 has 12 divisors (see below), whose sum is σ = 832243482. Its totient is φ = 211363392.

The previous prime is 422726797. The next prime is 422726833. The reversal of 422726816 is 618627224.

It can be written as a sum of positive squares in only one way, i.e., 345216400 + 77510416 = 18580^2 + 8804^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 422726816.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605075 + ... + 6605138.

Almost surely, 2^422726816 is an apocalyptic number.

It is an amenable number.

422726816 is a deficient number, since it is larger than the sum of its proper divisors (409516666).

422726816 is a wasteful number, since it uses less digits than its factorization.

422726816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13210223 (or 13210215 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 422726816 is about 20560.3213982661. The cubic root of 422726816 is about 750.5044404955.

The spelling of 422726816 in words is "four hundred twenty-two million, seven hundred twenty-six thousand, eight hundred sixteen".