28339012 has 24 divisors (see below), whose sum is σ = 53631872. Its totient is φ = 13024800.

The previous prime is 28339007. The next prime is 28339033. The reversal of 28339012 is 21093382.

It is a super-2 number, since 2×28339012² = 1606199202272288, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 13087 + ... + 15097.

Almost surely, 2^28339012 is an apocalyptic number.

It is an amenable number.

28339012 is a deficient number, since it is larger than the sum of its proper divisors (25292860).

28339012 is a wasteful number, since it uses less digits than its factorization.

28339012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 28339012 is about 5323.4398653502. The cubic root of 28339012 is about 304.8795080803.

The spelling of 28339012 in words is "twenty-eight million, three hundred thirty-nine thousand, twelve".