84578256 has 100 divisors (see below), whose sum is σ = 279794592. Its totient is φ = 24162624.

The previous prime is 84578243. The next prime is 84578267. The reversal of 84578256 is 65287548.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4411 + ... + 13733.

Almost surely, 2^84578256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84578256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139897296).

84578256 is an abundant number, since it is smaller than the sum of its proper divisors (195216336).

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

84578256 is a wasteful number, since it uses less digits than its factorization.

84578256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9350 (or 9335 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 84578256 is about 9196.6437356244. The cubic root of 84578256 is about 438.9545703928.

The spelling of 84578256 in words is "eighty-four million, five hundred seventy-eight thousand, two hundred fifty-six".