28718044 has 24 divisors (see below), whose sum is σ = 53222400. Its totient is φ = 13520880.

The previous prime is 28718029. The next prime is 28718089. The reversal of 28718044 is 44081782.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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, 12549 + ... + 14659.

It is an arithmetic number, because the mean of its divisors is an integer number (2217600).

Almost surely, 2^28718044 is an apocalyptic number.

It is an amenable number.

28718044 is a deficient number, since it is larger than the sum of its proper divisors (24504356).

28718044 is a wasteful number, since it uses less digits than its factorization.

28718044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313 (or 2311 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 28718044 is about 5358.9219065032. The cubic root of 28718044 is about 306.2327390521.

The spelling of 28718044 in words is "twenty-eight million, seven hundred eighteen thousand, forty-four".