28763884 has 6 divisors (see below), whose sum is σ = 50336804. Its totient is φ = 14381940.

The previous prime is 28763843. The next prime is 28763893. The reversal of 28763884 is 48836782.

It is a super-2 number, since 2×28763884² = 1654722045530912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3595482 + ... + 3595489.

Almost surely, 2^28763884 is an apocalyptic number.

It is an amenable number.

28763884 is a deficient number, since it is larger than the sum of its proper divisors (21572920).

28763884 is a wasteful number, since it uses less digits than its factorization.

28763884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190975 (or 7190973 counting only the distinct ones).

The product of its digits is 516096, while the sum is 46.

The square root of 28763884 is about 5363.1971807868. The cubic root of 28763884 is about 306.3955895854.

The spelling of 28763884 in words is "twenty-eight million, seven hundred sixty-three thousand, eight hundred eighty-four".