420812864 has 28 divisors (see below), whose sum is σ = 843331308. Its totient is φ = 208320000.

The previous prime is 420812837. The next prime is 420812867. The reversal of 420812864 is 468218024.

It can be written as a sum of positive squares in 2 ways, for example, as 383846464 + 36966400 = 19592^2 + 6080^2 .

It is not an unprimeable number, because it can be changed into a prime (420812867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26087 + ... + 39014.

Almost surely, 2^420812864 is an apocalyptic number.

It is an amenable number.

420812864 is an abundant number, since it is smaller than the sum of its proper divisors (422518444).

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

420812864 is a wasteful number, since it uses less digits than its factorization.

420812864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65214 (or 65204 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 420812864 is about 20513.7237965222. The cubic root of 420812864 is about 749.3700571182.

The spelling of 420812864 in words is "four hundred twenty million, eight hundred twelve thousand, eight hundred sixty-four".