422780256 has 48 divisors (see below), whose sum is σ = 1233111600. Its totient is φ = 140926464.

The previous prime is 422780213. The next prime is 422780269. The reversal of 422780256 is 652087224.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 422780256.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243801 + ... + 245528.

It is an arithmetic number, because the mean of its divisors is an integer number (25689825).

Almost surely, 2^422780256 is an apocalyptic number.

It is an amenable number.

422780256 is an abundant number, since it is smaller than the sum of its proper divisors (810331344).

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

422780256 is a wasteful number, since it uses less digits than its factorization.

422780256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489348 (or 489334 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 422780256 is about 20561.6209477755. The cubic root of 422780256 is about 750.5360647548.

The spelling of 422780256 in words is "four hundred twenty-two million, seven hundred eighty thousand, two hundred fifty-six".