28993832 has 16 divisors (see below), whose sum is σ = 62129760. Its totient is φ = 12425904.

The previous prime is 28993799. The next prime is 28993841. The reversal of 28993832 is 23839982.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258818 + ... + 258929.

It is an arithmetic number, because the mean of its divisors is an integer number (3883110).

Almost surely, 2^28993832 is an apocalyptic number.

It is an amenable number.

28993832 is an abundant number, since it is smaller than the sum of its proper divisors (33135928).

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

28993832 is a wasteful number, since it uses less digits than its factorization.

28993832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517760 (or 517756 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 28993832 is about 5384.5920922573. The cubic root of 28993832 is about 307.2098993573.

The spelling of 28993832 in words is "twenty-eight million, nine hundred ninety-three thousand, eight hundred thirty-two".