28718283 has 32 divisors (see below), whose sum is σ = 44047872. Its totient is φ = 16473600.

The previous prime is 28718267. The next prime is 28718303. The reversal of 28718283 is 38281782.

It is not a de Polignac number, because 28718283 - 2⁴ = 28718267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28718243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119043 + ... + 119283.

It is an arithmetic number, because the mean of its divisors is an integer number (1376496).

Almost surely, 2^28718283 is an apocalyptic number.

28718283 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28718283 is a deficient number, since it is larger than the sum of its proper divisors (15329589).

28718283 is a wasteful number, since it uses less digits than its factorization.

28718283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435.

The product of its digits is 43008, while the sum is 39.

The square root of 28718283 is about 5358.9442057181. The cubic root of 28718283 is about 306.2335885694.

The spelling of 28718283 in words is "twenty-eight million, seven hundred eighteen thousand, two hundred eighty-three".