28233487332 has 30 divisors (see below), whose sum is σ = 73807913718. Its totient is φ = 9411162336.

The previous prime is 28233487309. The next prime is 28233487339. The reversal of 28233487332 is 23378433282.

28233487332 is a `hidden beast` number, since 2 + 8 + 233 + 4 + 87 + 332 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20668662756 + 7564824576 = 143766^2 + 86976^2 .

It is not an unprimeable number, because it can be changed into a prime (28233487339) 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, 43569873 + ... + 43570520.

Almost surely, 2^28233487332 is an apocalyptic number.

It is an amenable number.

28233487332 is an abundant number, since it is smaller than the sum of its proper divisors (45574426386).

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

28233487332 is a wasteful number, since it uses less digits than its factorization.

28233487332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87140409 (or 87140398 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 45.

The spelling of 28233487332 in words is "twenty-eight billion, two hundred thirty-three million, four hundred eighty-seven thousand, three hundred thirty-two".