28276452 has 42 divisors (see below), whose sum is σ = 74199398. Its totient is φ = 9424512.

The previous prime is 28276439. The next prime is 28276459. The reversal of 28276452 is 25467282.

28276452 is a `hidden beast` number, since 2 + 8 + 2 + 7 + 645 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19131876 + 9144576 = 4374^2 + 3024^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28276459) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1933 + ... + 7764.

Almost surely, 2^28276452 is an apocalyptic number.

It is an amenable number.

28276452 is an abundant number, since it is smaller than the sum of its proper divisors (45922946).

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

28276452 is an equidigital number, since it uses as much as digits as its factorization.

28276452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9719 (or 9702 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 28276452 is about 5317.5607189763. The cubic root of 28276452 is about 304.6549964380.

The spelling of 28276452 in words is "twenty-eight million, two hundred seventy-six thousand, four hundred fifty-two".