28732176 has 180 divisors, whose sum is σ = 94548636. Its totient is φ = 8110080.

The previous prime is 28732169. The next prime is 28732189. The reversal of 28732176 is 67123782.

It can be written as a sum of positive squares in 2 ways, for example, as 17842176 + 10890000 = 4224^2 + 3300^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 28732176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 296160 + ... + 296256.

Almost surely, 2^28732176 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 28732176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47274318).

28732176 is an abundant number, since it is smaller than the sum of its proper divisors (65816460).

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

28732176 is a wasteful number, since it uses less digits than its factorization.

28732176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 130 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 28732176 is about 5360.2402931212. The cubic root of 28732176 is about 306.2829626605.

The spelling of 28732176 in words is "twenty-eight million, seven hundred thirty-two thousand, one hundred seventy-six".