28873312 has 72 divisors (see below), whose sum is σ = 65023560. Its totient is φ = 12579840.

The previous prime is 28873297. The next prime is 28873319. The reversal of 28873312 is 21337882.

Its product of digits (16128) is a multiple of the sum of its prime factors (336).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28873319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102612 + ... + 102892.

It is an arithmetic number, because the mean of its divisors is an integer number (903105).

Almost surely, 2^28873312 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 28873312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32511780).

28873312 is an abundant number, since it is smaller than the sum of its proper divisors (36150248).

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

28873312 is a wasteful number, since it uses less digits than its factorization.

28873312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 315 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 28873312 is about 5373.3892470209. The cubic root of 28873312 is about 306.7836436746.

The spelling of 28873312 in words is "twenty-eight million, eight hundred seventy-three thousand, three hundred twelve".