28175472 has 160 divisors (see below), whose sum is σ = 90619200. Its totient is φ = 8322048.

The previous prime is 28175447. The next prime is 28175527. The reversal of 28175472 is 27457182.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162778 + ... + 162950.

It is an arithmetic number, because the mean of its divisors is an integer number (566370).

Almost surely, 2^28175472 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 28175472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45309600).

28175472 is an abundant number, since it is smaller than the sum of its proper divisors (62443728).

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

28175472 is a wasteful number, since it uses less digits than its factorization.

28175472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 220 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 28175472 is about 5308.0572717332. The cubic root of 28175472 is about 304.2919056750.

The spelling of 28175472 in words is "twenty-eight million, one hundred seventy-five thousand, four hundred seventy-two".