28708024 has 8 divisors (see below), whose sum is σ = 53827560. Its totient is φ = 14354008.

The previous prime is 28708007. The next prime is 28708039. The reversal of 28708024 is 42080782.

It is a tau number, because it is divible by the number of its divisors (8).

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, 1794244 + ... + 1794259.

It is an arithmetic number, because the mean of its divisors is an integer number (6728445).

Almost surely, 2^28708024 is an apocalyptic number.

It is an amenable number.

28708024 is a deficient number, since it is larger than the sum of its proper divisors (25119536).

28708024 is a wasteful number, since it uses less digits than its factorization.

28708024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3588509 (or 3588505 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 28708024 is about 5357.9869354077. The cubic root of 28708024 is about 306.1971190660.

The spelling of 28708024 in words is "twenty-eight million, seven hundred eight thousand, twenty-four".