28361472 has 36 divisors (see below), whose sum is σ = 75484920. Its totient is φ = 9453568.

The previous prime is 28361453. The next prime is 28361483. The reversal of 28361472 is 27416382.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17697 + ... + 19232.

Almost surely, 2^28361472 is an apocalyptic number.

It is an amenable number.

28361472 is an abundant number, since it is smaller than the sum of its proper divisors (47123448).

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

28361472 is an equidigital number, since it uses as much as digits as its factorization.

28361472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36948 (or 36934 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 28361472 is about 5325.5489857854. The cubic root of 28361472 is about 304.9600305950.

The spelling of 28361472 in words is "twenty-eight million, three hundred sixty-one thousand, four hundred seventy-two".