420800256 has 54 divisors (see below), whose sum is σ = 1213277520. Its totient is φ = 140265984.

The previous prime is 420800227. The next prime is 420800273. The reversal of 420800256 is 652008024.

It is a congruent number.

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 in 5 ways as a sum of consecutive naturals, for example, 89016 + ... + 93623.

Almost surely, 2^420800256 is an apocalyptic number.

It is an amenable number.

420800256 is an abundant number, since it is smaller than the sum of its proper divisors (792477264).

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

420800256 is a wasteful number, since it uses less digits than its factorization.

420800256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182661 (or 182644 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 420800256 is about 20513.4164877526. The cubic root of 420800256 is about 749.3625730694.

The spelling of 420800256 in words is "four hundred twenty million, eight hundred thousand, two hundred fifty-six".