28512324 has 30 divisors (see below), whose sum is σ = 74537694. Its totient is φ = 9504000.

The previous prime is 28512313. The next prime is 28512347. The reversal of 28512324 is 42321582.

It can be written as a sum of positive squares in only one way, i.e., 15681600 + 12830724 = 3960^2 + 3582^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 43677 + ... + 44324.

Almost surely, 2^28512324 is an apocalyptic number.

It is an amenable number.

28512324 is an abundant number, since it is smaller than the sum of its proper divisors (46025370).

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

28512324 is a wasteful number, since it uses less digits than its factorization.

28512324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88017 (or 88006 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 28512324 is about 5339.6932496165. The cubic root of 28512324 is about 305.4997593669.

The spelling of 28512324 in words is "twenty-eight million, five hundred twelve thousand, three hundred twenty-four".