28394472256 has 56 divisors (see below), whose sum is σ = 59059413504. Its totient is φ = 13518912000.

The previous prime is 28394472247. The next prime is 28394472277. The reversal of 28394472256 is 65227449382.

It is a congruent number.

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, 285006 + ... + 371506.

It is an arithmetic number, because the mean of its divisors is an integer number (1054632384).

Almost surely, 2^28394472256 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 28394472256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29529706752).

28394472256 is an abundant number, since it is smaller than the sum of its proper divisors (30664941248).

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

28394472256 is a wasteful number, since it uses less digits than its factorization.

28394472256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86759 (or 86749 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 52.

The spelling of 28394472256 in words is "twenty-eight billion, three hundred ninety-four million, four hundred seventy-two thousand, two hundred fifty-six".