28999931332 has 24 divisors (see below), whose sum is σ = 51912971264. Its totient is φ = 14171062752.

The previous prime is 28999931297. The next prime is 28999931341. The reversal of 28999931332 is 23313999982.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391983 + ... + 460054.

Almost surely, 2^28999931332 is an apocalyptic number.

It is an amenable number.

28999931332 is a deficient number, since it is larger than the sum of its proper divisors (22913039932).

28999931332 is a wasteful number, since it uses less digits than its factorization.

28999931332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852235 (or 852233 counting only the distinct ones).

The product of its digits is 5668704, while the sum is 58.

The spelling of 28999931332 in words is "twenty-eight billion, nine hundred ninety-nine million, nine hundred thirty-one thousand, three hundred thirty-two".