28152472 has 16 divisors (see below), whose sum is σ = 52959240. Its totient is φ = 14030016.

The previous prime is 28152409. The next prime is 28152479. The reversal of 28152472 is 27425182.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28152479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3118 + ... + 8125.

Almost surely, 2^28152472 is an apocalyptic number.

It is an amenable number.

28152472 is a deficient number, since it is larger than the sum of its proper divisors (24806768).

28152472 is a wasteful number, since it uses less digits than its factorization.

28152472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11562 (or 11558 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 28152472 is about 5305.8903117196. The cubic root of 28152472 is about 304.2090840033.

The spelling of 28152472 in words is "twenty-eight million, one hundred fifty-two thousand, four hundred seventy-two".