28557742432 has 24 divisors (see below), whose sum is σ = 57144748752. Its totient is φ = 14044790400.

The previous prime is 28557742393. The next prime is 28557742439. The reversal of 28557742432 is 23424775582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28557742439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7313044 + ... + 7316947.

It is an arithmetic number, because the mean of its divisors is an integer number (2381031198).

Almost surely, 2^28557742432 is an apocalyptic number.

It is an amenable number.

28557742432 is an abundant number, since it is smaller than the sum of its proper divisors (28587006320).

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

28557742432 is a wasteful number, since it uses less digits than its factorization.

28557742432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14630062 (or 14630054 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 49.

The spelling of 28557742432 in words is "twenty-eight billion, five hundred fifty-seven million, seven hundred forty-two thousand, four hundred thirty-two".