28113318 has 20 divisors (see below), whose sum is σ = 62995020. Its totient is φ = 9371052.

The previous prime is 28113313. The next prime is 28113329. The reversal of 28113318 is 81331182.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28113291 and 28113300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28113313) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 86608 + ... + 86931.

It is an arithmetic number, because the mean of its divisors is an integer number (3149751).

Almost surely, 2^28113318 is an apocalyptic number.

28113318 is an abundant number, since it is smaller than the sum of its proper divisors (34881702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28113318 is a wasteful number, since it uses less digits than its factorization.

28113318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173553 (or 173544 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 28113318 is about 5302.1993549847. The cubic root of 28113318 is about 304.0679888907.

The spelling of 28113318 in words is "twenty-eight million, one hundred thirteen thousand, three hundred eighteen".