28833732 has 30 divisors (see below), whose sum is σ = 75377918. Its totient is φ = 9611136.

The previous prime is 28833667. The next prime is 28833757. The reversal of 28833732 is 23733882.

28833732 is a `hidden beast` number, since 288 + 3 + 373 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28579716 + 254016 = 5346^2 + 504^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 44173 + ... + 44820.

Almost surely, 2^28833732 is an apocalyptic number.

It is an amenable number.

28833732 is an abundant number, since it is smaller than the sum of its proper divisors (46544186).

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

28833732 is a wasteful number, since it uses less digits than its factorization.

28833732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89009 (or 88998 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 28833732 is about 5369.7050198312. The cubic root of 28833732 is about 306.6433982556.

It can be divided in two parts, 288337 and 32, that added together give a square (288369 = 537²).

The spelling of 28833732 in words is "twenty-eight million, eight hundred thirty-three thousand, seven hundred thirty-two".