28974292 has 6 divisors (see below), whose sum is σ = 50705018. Its totient is φ = 14487144.

The previous prime is 28974289. The next prime is 28974317. The reversal of 28974292 is 29247982.

It can be written as a sum of positive squares in only one way, i.e., 24462916 + 4511376 = 4946^2 + 2124^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3621783 + ... + 3621790.

Almost surely, 2^28974292 is an apocalyptic number.

It is an amenable number.

28974292 is a deficient number, since it is larger than the sum of its proper divisors (21730726).

28974292 is a wasteful number, since it uses less digits than its factorization.

28974292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7243577 (or 7243575 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 28974292 is about 5382.7773500304. Note that the first 3 decimals coincide. The cubic root of 28974292 is about 307.1408705324.

The spelling of 28974292 in words is "twenty-eight million, nine hundred seventy-four thousand, two hundred ninety-two".