28763284 has 12 divisors (see below), whose sum is σ = 54911808. Its totient is φ = 13074200.

The previous prime is 28763279. The next prime is 28763291. The reversal of 28763284 is 48236782.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326812 + ... + 326899.

It is an arithmetic number, because the mean of its divisors is an integer number (4575984).

Almost surely, 2^28763284 is an apocalyptic number.

It is an amenable number.

28763284 is a deficient number, since it is larger than the sum of its proper divisors (26148524).

28763284 is a wasteful number, since it uses less digits than its factorization.

28763284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653726 (or 653724 counting only the distinct ones).

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

The square root of 28763284 is about 5363.1412437116. The cubic root of 28763284 is about 306.3934591518.

The spelling of 28763284 in words is "twenty-eight million, seven hundred sixty-three thousand, two hundred eighty-four".