28276872 has 32 divisors (see below), whose sum is σ = 76130880. Its totient is φ = 8700480.

The previous prime is 28276861. The next prime is 28276873. The reversal of 28276872 is 27867282.

It is not an unprimeable number, because it can be changed into a prime (28276873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45004 + ... + 45627.

It is an arithmetic number, because the mean of its divisors is an integer number (2379090).

Almost surely, 2^28276872 is an apocalyptic number.

It is an amenable number.

28276872 is an abundant number, since it is smaller than the sum of its proper divisors (47854008).

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

28276872 is a wasteful number, since it uses less digits than its factorization.

28276872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90653 (or 90649 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 28276872 is about 5317.6002106213. The cubic root of 28276872 is about 304.6565048128.

The spelling of 28276872 in words is "twenty-eight million, two hundred seventy-six thousand, eight hundred seventy-two".