422643856 has 10 divisors (see below), whose sum is σ = 818872502. Its totient is φ = 211321920.

The previous prime is 422643833. The next prime is 422643857. The reversal of 422643856 is 658346224.

It can be written as a sum of positive squares in only one way, i.e., 332697600 + 89946256 = 18240^2 + 9484^2 .

It is a super-3 number, since 3×422643856³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (422643857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13207605 + ... + 13207636.

Almost surely, 2^422643856 is an apocalyptic number.

It is an amenable number.

422643856 is a deficient number, since it is larger than the sum of its proper divisors (396228646).

422643856 is a wasteful number, since it uses less digits than its factorization.

422643856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26415249 (or 26415243 counting only the distinct ones).

The product of its digits is 276480, while the sum is 40.

The square root of 422643856 is about 20558.3038210841. The cubic root of 422643856 is about 750.4553418661.

The spelling of 422643856 in words is "four hundred twenty-two million, six hundred forty-three thousand, eight hundred fifty-six".