28533712554 has 48 divisors (see below), whose sum is σ = 65019082752. Its totient is φ = 9026053344.

The previous prime is 28533712553. The next prime is 28533712561. The reversal of 28533712554 is 45521733582.

28533712554 is a `hidden beast` number, since 2 + 8 + 53 + 37 + 12 + 554 = 666.

It is a super-2 number, since 2×28533712554² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28533712553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218769 + ... + 323924.

It is an arithmetic number, because the mean of its divisors is an integer number (1354564224).

Almost surely, 2^28533712554 is an apocalyptic number.

28533712554 is an abundant number, since it is smaller than the sum of its proper divisors (36485370198).

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

28533712554 is a wasteful number, since it uses less digits than its factorization.

28533712554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542851 (or 542848 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The spelling of 28533712554 in words is "twenty-eight billion, five hundred thirty-three million, seven hundred twelve thousand, five hundred fifty-four".