28736284 has 24 divisors (see below), whose sum is σ = 53253200. Its totient is φ = 13530240.

The previous prime is 28736263. The next prime is 28736299. The reversal of 28736284 is 48263782.

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, 12712 + ... + 14800.

Almost surely, 2^28736284 is an apocalyptic number.

It is an amenable number.

28736284 is a deficient number, since it is larger than the sum of its proper divisors (24516916).

28736284 is a wasteful number, since it uses less digits than its factorization.

28736284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293 (or 2291 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 28736284 is about 5360.6234712018. The cubic root of 28736284 is about 306.2975589613.

The spelling of 28736284 in words is "twenty-eight million, seven hundred thirty-six thousand, two hundred eighty-four".