28960724 has 36 divisors (see below), whose sum is σ = 58111452. Its totient is φ = 12510720.

The previous prime is 28960721. The next prime is 28960733. The reversal of 28960724 is 42706982.

It can be written as a sum of positive squares in 6 ways, for example, as 12816400 + 16144324 = 3580^2 + 4018^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28960721) 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, 159914 + ... + 160094.

It is an arithmetic number, because the mean of its divisors is an integer number (1614207).

Almost surely, 2^28960724 is an apocalyptic number.

It is an amenable number.

28960724 is an abundant number, since it is smaller than the sum of its proper divisors (29150728).

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

28960724 is a wasteful number, since it uses less digits than its factorization.

28960724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 28960724 is about 5381.5168865293. The cubic root of 28960724 is about 307.0929206925.

The spelling of 28960724 in words is "twenty-eight million, nine hundred sixty thousand, seven hundred twenty-four".