28709796 has 24 divisors (see below), whose sum is σ = 69902784. Its totient is φ = 9153760.

The previous prime is 28709777. The next prime is 28709801. The reversal of 28709796 is 69790782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51735 + ... + 52286.

It is an arithmetic number, because the mean of its divisors is an integer number (2912616).

Almost surely, 2^28709796 is an apocalyptic number.

It is an amenable number.

28709796 is an abundant number, since it is smaller than the sum of its proper divisors (41192988).

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

28709796 is a wasteful number, since it uses less digits than its factorization.

28709796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104051 (or 104049 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 28709796 is about 5358.1522934683. The cubic root of 28709796 is about 306.2034189322.

The spelling of 28709796 in words is "twenty-eight million, seven hundred nine thousand, seven hundred ninety-six".