28633916 has 24 divisors (see below), whose sum is σ = 53234496. Its totient is φ = 13429760.

The previous prime is 28633903. The next prime is 28633961. The reversal of 28633916 is 61933682.

It is a super-2 number, since 2×28633916² = 1639802290990112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28633916.

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, 28820 + ... + 29796.

It is an arithmetic number, because the mean of its divisors is an integer number (2218104).

Almost surely, 2^28633916 is an apocalyptic number.

It is an amenable number.

28633916 is a deficient number, since it is larger than the sum of its proper divisors (24600580).

28633916 is a wasteful number, since it uses less digits than its factorization.

28633916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429 (or 1427 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 28633916 is about 5351.0668095250. The cubic root of 28633916 is about 305.9334156748.

The spelling of 28633916 in words is "twenty-eight million, six hundred thirty-three thousand, nine hundred sixteen".