28752084 has 30 divisors (see below), whose sum is σ = 75164474. Its totient is φ = 9583920.

The previous prime is 28752067. The next prime is 28752103. The reversal of 28752084 is 48025782.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21068100 + 7683984 = 4590^2 + 2772^2 .

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 9 ways as a sum of consecutive naturals, for example, 44047 + ... + 44694.

Almost surely, 2^28752084 is an apocalyptic number.

It is an amenable number.

28752084 is an abundant number, since it is smaller than the sum of its proper divisors (46412390).

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

28752084 is a wasteful number, since it uses less digits than its factorization.

28752084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88757 (or 88746 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 28752084 is about 5362.0969778623. The cubic root of 28752084 is about 306.3536856192.

The spelling of 28752084 in words is "twenty-eight million, seven hundred fifty-two thousand, eighty-four".