28566577152 has 140 divisors (see below), whose sum is σ = 85343830836. Its totient is φ = 9521971200.

The previous prime is 28566577037. The next prime is 28566577187. The reversal of 28566577152 is 25177566582.

28566577152 is a `hidden beast` number, since 2 + 8 + 5 + 66 + 577 + 1 + 5 + 2 = 666.

It is a super-2 number, since 2×28566577152² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 642027 + ... + 685077.

Almost surely, 2^28566577152 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 28566577152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42671915418).

28566577152 is an abundant number, since it is smaller than the sum of its proper divisors (56777253684).

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

28566577152 is an frugal number, since it uses more digits than its factorization.

28566577152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43089 (or 43056 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 54.

The spelling of 28566577152 in words is "twenty-eight billion, five hundred sixty-six million, five hundred seventy-seven thousand, one hundred fifty-two".