28181696 has 14 divisors (see below), whose sum is σ = 55923180. Its totient is φ = 14090816.

The previous prime is 28181689. The next prime is 28181729. The reversal of 28181696 is 69618182.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220106 + ... + 220233.

Almost surely, 2^28181696 is an apocalyptic number.

It is an amenable number.

28181696 is a deficient number, since it is larger than the sum of its proper divisors (27741484).

28181696 is an equidigital number, since it uses as much as digits as its factorization.

28181696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440351 (or 440341 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 28181696 is about 5308.6435178867. The cubic root of 28181696 is about 304.3143101903.

The spelling of 28181696 in words is "twenty-eight million, one hundred eighty-one thousand, six hundred ninety-six".