28747290332 has 24 divisors (see below), whose sum is σ = 50760997056. Its totient is φ = 14244505088.

The previous prime is 28747290311. The next prime is 28747290349. The reversal of 28747290332 is 23309274782.

It is a congruent number.

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, 280733 + ... + 369195.

It is an arithmetic number, because the mean of its divisors is an integer number (2115041544).

Almost surely, 2^28747290332 is an apocalyptic number.

It is an amenable number.

28747290332 is a deficient number, since it is larger than the sum of its proper divisors (22013706724).

28747290332 is a wasteful number, since it uses less digits than its factorization.

28747290332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89197 (or 89195 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 28747290332 in words is "twenty-eight billion, seven hundred forty-seven million, two hundred ninety thousand, three hundred thirty-two".