872788420 has 24 divisors (see below), whose sum is σ = 2094692544. Its totient is φ = 299241696.

The previous prime is 872788403. The next prime is 872788439. The reversal of 872788420 is 24887278.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3116962 + ... + 3117241.

It is an arithmetic number, because the mean of its divisors is an integer number (87278856).

Almost surely, 2^872788420 is an apocalyptic number.

It is an amenable number.

872788420 is an abundant number, since it is smaller than the sum of its proper divisors (1221904124).

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

872788420 is a wasteful number, since it uses less digits than its factorization.

872788420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6234219 (or 6234217 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 46.

The square root of 872788420 is about 29542.9927393959. The cubic root of 872788420 is about 955.6590828781.

The spelling of 872788420 in words is "eight hundred seventy-two million, seven hundred eighty-eight thousand, four hundred twenty".