28333172 has 48 divisors (see below), whose sum is σ = 58665600. Its totient is φ = 11966976.

The previous prime is 28333159. The next prime is 28333177. The reversal of 28333172 is 27133382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28333177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146708 + ... + 146900.

It is an arithmetic number, because the mean of its divisors is an integer number (1222200).

Almost surely, 2^28333172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28333172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29332800).

28333172 is an abundant number, since it is smaller than the sum of its proper divisors (30332428).

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

28333172 is a wasteful number, since it uses less digits than its factorization.

28333172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 309 counting only the distinct ones).

The product of its digits is 6048, while the sum is 29.

The square root of 28333172 is about 5322.8913195744. The cubic root of 28333172 is about 304.8585638233.

The spelling of 28333172 in words is "twenty-eight million, three hundred thirty-three thousand, one hundred seventy-two".