28974224 has 10 divisors (see below), whose sum is σ = 56137590. Its totient is φ = 14487104.

The previous prime is 28974203. The next prime is 28974233. The reversal of 28974224 is 42247982.

It can be written as a sum of positive squares in only one way, i.e., 18215824 + 10758400 = 4268^2 + 3280^2 .

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 as a sum of consecutive naturals, namely, 905429 + ... + 905460.

It is an arithmetic number, because the mean of its divisors is an integer number (5613759).

Almost surely, 2^28974224 is an apocalyptic number.

It is an amenable number.

28974224 is a deficient number, since it is larger than the sum of its proper divisors (27163366).

28974224 is a wasteful number, since it uses less digits than its factorization.

28974224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810897 (or 1810891 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 28974224 is about 5382.7710335848. The cubic root of 28974224 is about 307.1406302550.

The spelling of 28974224 in words is "twenty-eight million, nine hundred seventy-four thousand, two hundred twenty-four".