28345712 has 10 divisors (see below), whose sum is σ = 54919848. Its totient is φ = 14172848.

The previous prime is 28345693. The next prime is 28345721. The reversal of 28345712 is 21754382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 885788 + ... + 885819.

Almost surely, 2^28345712 is an apocalyptic number.

It is an amenable number.

28345712 is a deficient number, since it is larger than the sum of its proper divisors (26574136).

28345712 is a wasteful number, since it uses less digits than its factorization.

28345712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771615 (or 1771609 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 28345712 is about 5324.0691205130. The cubic root of 28345712 is about 304.9035330503.

The spelling of 28345712 in words is "twenty-eight million, three hundred forty-five thousand, seven hundred twelve".