28872296 has 16 divisors (see below), whose sum is σ = 54462240. Its totient is φ = 14349040.

The previous prime is 28872293. The next prime is 28872317. The reversal of 28872296 is 69227882.

It is not an unprimeable number, because it can be changed into a prime (28872293) 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, 9470 + ... + 12141.

It is an arithmetic number, because the mean of its divisors is an integer number (3403890).

Almost surely, 2^28872296 is an apocalyptic number.

It is an amenable number.

28872296 is a deficient number, since it is larger than the sum of its proper divisors (25589944).

28872296 is a wasteful number, since it uses less digits than its factorization.

28872296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21784 (or 21780 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 28872296 is about 5373.2947062301. The cubic root of 28872296 is about 306.7800452439.

The spelling of 28872296 in words is "twenty-eight million, eight hundred seventy-two thousand, two hundred ninety-six".