28039302 has 24 divisors (see below), whose sum is σ = 60849360. Its totient is φ = 9331440.

The previous prime is 28039289. The next prime is 28039313. The reversal of 28039302 is 20393082.

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 in 11 ways as a sum of consecutive naturals, for example, 20599 + ... + 21917.

It is an arithmetic number, because the mean of its divisors is an integer number (2535390).

Almost surely, 2^28039302 is an apocalyptic number.

28039302 is an abundant number, since it is smaller than the sum of its proper divisors (32810058).

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

28039302 is a wasteful number, since it uses less digits than its factorization.

28039302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508 (or 2505 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 28039302 is about 5295.2150097989. The cubic root of 28039302 is about 303.8009069786.

The spelling of 28039302 in words is "twenty-eight million, thirty-nine thousand, three hundred two".