28387796 has 24 divisors (see below), whose sum is σ = 52436160. Its totient is φ = 13420352.

The previous prime is 28387787. The next prime is 28387861. The reversal of 28387796 is 69778382.

It is a happy number.

It is a congruent number.

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, 6455 + ... + 9921.

It is an arithmetic number, because the mean of its divisors is an integer number (2184840).

Almost surely, 2^28387796 is an apocalyptic number.

It is an amenable number.

28387796 is a deficient number, since it is larger than the sum of its proper divisors (24048364).

28387796 is a wasteful number, since it uses less digits than its factorization.

28387796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583 (or 3581 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The square root of 28387796 is about 5328.0198948578. The cubic root of 28387796 is about 305.0543520444.

The spelling of 28387796 in words is "twenty-eight million, three hundred eighty-seven thousand, seven hundred ninety-six".