84428856 has 48 divisors (see below), whose sum is σ = 240700200. Its totient is φ = 26661312.

The previous prime is 84428849. The next prime is 84428863. The reversal of 84428856 is 65882448.

It is an interprime number because it is at equal distance from previous prime (84428849) and next prime (84428863).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29491 + ... + 32226.

Almost surely, 2^84428856 is an apocalyptic number.

It is an amenable number.

84428856 is an abundant number, since it is smaller than the sum of its proper divisors (156271344).

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

84428856 is a wasteful number, since it uses less digits than its factorization.

84428856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61748 (or 61741 counting only the distinct ones).

The product of its digits is 491520, while the sum is 45.

The square root of 84428856 is about 9188.5176171132. The cubic root of 84428856 is about 438.6959599354.

The spelling of 84428856 in words is "eighty-four million, four hundred twenty-eight thousand, eight hundred fifty-six".