28174032 has 90 divisors (see below), whose sum is σ = 83882838. Its totient is φ = 8825856.

The previous prime is 28174031. The next prime is 28174079. The reversal of 28174032 is 23047182.

It can be written as a sum of positive squares in 3 ways, for example, as 21013056 + 7160976 = 4584^2 + 2676^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28173987 and 28174005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28174031) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 41278 + ... + 41954.

Almost surely, 2^28174032 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 28174032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41941419).

28174032 is an abundant number, since it is smaller than the sum of its proper divisors (55708806).

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

28174032 is a wasteful number, since it uses less digits than its factorization.

28174032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 28174032 is about 5307.9216271531. The cubic root of 28174032 is about 304.2867216411.

The spelling of 28174032 in words is "twenty-eight million, one hundred seventy-four thousand, thirty-two".