28872264 has 64 divisors (see below), whose sum is σ = 74859840. Its totient is φ = 9273600.

The previous prime is 28872251. The next prime is 28872271. The reversal of 28872264 is 46227882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104094 + ... + 104370.

It is an arithmetic number, because the mean of its divisors is an integer number (1169685).

Almost surely, 2^28872264 is an apocalyptic number.

28872264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28872264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37429920).

28872264 is an abundant number, since it is smaller than the sum of its proper divisors (45987576).

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

28872264 is a wasteful number, since it uses less digits than its factorization.

28872264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 426 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 28872264 is about 5373.2917285403. The cubic root of 28872264 is about 306.7799319061.

It can be divided in two parts, 2887 and 2264, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 28872264 in words is "twenty-eight million, eight hundred seventy-two thousand, two hundred sixty-four".