28124960 has 24 divisors (see below), whose sum is σ = 66445596. Its totient is φ = 11249920.

The previous prime is 28124947. The next prime is 28124963. The reversal of 28124960 is 6942182.

It can be written as a sum of positive squares in 2 ways, for example, as 27920656 + 204304 = 5284^2 + 452^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (28124963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87731 + ... + 88050.

Almost surely, 2^28124960 is an apocalyptic number.

28124960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28124960 is an abundant number, since it is smaller than the sum of its proper divisors (38320636).

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

28124960 is a wasteful number, since it uses less digits than its factorization.

28124960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175796 (or 175788 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28124960 is about 5303.2970876616. The cubic root of 28124960 is about 304.1099556079.

The spelling of 28124960 in words is "twenty-eight million, one hundred twenty-four thousand, nine hundred sixty".