28572553856 has 384 divisors, whose sum is σ = 77358758400. Its totient is φ = 10363852800.

The previous prime is 28572553813. The next prime is 28572553901. The reversal of 28572553856 is 65835527582.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93070055 + ... + 93070361.

It is an arithmetic number, because the mean of its divisors is an integer number (201455100).

Almost surely, 2^28572553856 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 28572553856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38679379200).

28572553856 is an abundant number, since it is smaller than the sum of its proper divisors (48786204544).

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

28572553856 is a wasteful number, since it uses less digits than its factorization.

28572553856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 417 counting only the distinct ones).

The product of its digits is 20160000, while the sum is 56.

The spelling of 28572553856 in words is "twenty-eight billion, five hundred seventy-two million, five hundred fifty-three thousand, eight hundred fifty-six".