28083684 has 24 divisors (see below), whose sum is σ = 66428320. Its totient is φ = 9232704.

The previous prime is 28083673. The next prime is 28083697. The reversal of 28083684 is 48638082.

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, 15154 + ... + 16905.

Almost surely, 2^28083684 is an apocalyptic number.

It is an amenable number.

28083684 is an abundant number, since it is smaller than the sum of its proper divisors (38344636).

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

28083684 is a wasteful number, since it uses less digits than its factorization.

28083684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32139 (or 32137 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 28083684 is about 5299.4041174457. The cubic root of 28083684 is about 303.9611128698.

The spelling of 28083684 in words is "twenty-eight million, eighty-three thousand, six hundred eighty-four".