28879224 has 32 divisors (see below), whose sum is σ = 78762240. Its totient is φ = 8751200.

The previous prime is 28879217. The next prime is 28879229. The reversal of 28879224 is 42297882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28879229) 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, 54432 + ... + 54959.

It is an arithmetic number, because the mean of its divisors is an integer number (2461320).

Almost surely, 2^28879224 is an apocalyptic number.

28879224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28879224 is an abundant number, since it is smaller than the sum of its proper divisors (49883016).

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

28879224 is a wasteful number, since it uses less digits than its factorization.

28879224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109411 (or 109407 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 28879224 is about 5373.9393372088. The cubic root of 28879224 is about 306.8045809000.

The spelling of 28879224 in words is "twenty-eight million, eight hundred seventy-nine thousand, two hundred twenty-four".