28683764 has 12 divisors (see below), whose sum is σ = 51421188. Its totient is φ = 13992000.

The previous prime is 28683751. The next prime is 28683779. The reversal of 28683764 is 46738682.

It can be written as a sum of positive squares in 2 ways, for example, as 7246864 + 21436900 = 2692^2 + 4630^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87287 + ... + 87614.

It is an arithmetic number, because the mean of its divisors is an integer number (4285099).

Almost surely, 2^28683764 is an apocalyptic number.

It is an amenable number.

28683764 is a deficient number, since it is larger than the sum of its proper divisors (22737424).

28683764 is a wasteful number, since it uses less digits than its factorization.

28683764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174946 (or 174944 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 28683764 is about 5355.7225469585. The cubic root of 28683764 is about 306.1108431227.

The spelling of 28683764 in words is "twenty-eight million, six hundred eighty-three thousand, seven hundred sixty-four".