28316812 has 6 divisors (see below), whose sum is σ = 49554428. Its totient is φ = 14158404.

The previous prime is 28316807. The next prime is 28316851. The reversal of 28316812 is 21861382.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3539598 + ... + 3539605.

Almost surely, 2^28316812 is an apocalyptic number.

It is an amenable number.

28316812 is a deficient number, since it is larger than the sum of its proper divisors (21237616).

28316812 is a wasteful number, since it uses less digits than its factorization.

28316812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7079207 (or 7079205 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 28316812 is about 5321.3543388878. The cubic root of 28316812 is about 304.7998758849.

The spelling of 28316812 in words is "twenty-eight million, three hundred sixteen thousand, eight hundred twelve".