28783318 has 16 divisors (see below), whose sum is σ = 43776000. Its totient is φ = 14193000.

The previous prime is 28783301. The next prime is 28783319. The reversal of 28783318 is 81338782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28783319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57433 + ... + 57931.

It is an arithmetic number, because the mean of its divisors is an integer number (2736000).

Almost surely, 2^28783318 is an apocalyptic number.

28783318 is a deficient number, since it is larger than the sum of its proper divisors (14992682).

28783318 is a wasteful number, since it uses less digits than its factorization.

28783318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843.

The product of its digits is 64512, while the sum is 40.

The square root of 28783318 is about 5365.0086672810. The cubic root of 28783318 is about 306.4645783140.

The spelling of 28783318 in words is "twenty-eight million, seven hundred eighty-three thousand, three hundred eighteen".