28533506472 has 40 divisors (see below), whose sum is σ = 79920239850. Its totient is φ = 9511168608.

The previous prime is 28533506471. The next prime is 28533506479. The reversal of 28533506472 is 27460533582.

28533506472 is a `hidden beast` number, since 2 + 8 + 533 + 50 + 64 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25393697316 + 3139809156 = 159354^2 + 56034^2 .

It is not an unprimeable number, because it can be changed into a prime (28533506471) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 22015947 + ... + 22017242.

Almost surely, 2^28533506472 is an apocalyptic number.

It is an amenable number.

28533506472 is an abundant number, since it is smaller than the sum of its proper divisors (51386733378).

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

28533506472 is a wasteful number, since it uses less digits than its factorization.

28533506472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44033207 (or 44033194 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 28533506472 in words is "twenty-eight billion, five hundred thirty-three million, five hundred six thousand, four hundred seventy-two".