28358470656 has 440 divisors, whose sum is σ = 89880658560. Its totient is φ = 8891596800.

The previous prime is 28358470649. The next prime is 28358470663. The reversal of 28358470656 is 65607485382.

28358470656 is a `hidden beast` number, since 2 + 8 + 3 + 584 + 7 + 0 + 6 + 56 = 666.

It is an interprime number because it is at equal distance from previous prime (28358470649) and next prime (28358470663).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 105421690 + ... + 105421958.

It is an arithmetic number, because the mean of its divisors is an integer number (204274224).

Almost surely, 2^28358470656 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 28358470656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44940329280).

28358470656 is an abundant number, since it is smaller than the sum of its proper divisors (61522187904).

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

28358470656 is a wasteful number, since it uses less digits than its factorization.

28358470656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 28358470656 in words is "twenty-eight billion, three hundred fifty-eight million, four hundred seventy thousand, six hundred fifty-six".