111028369 has 9 divisors (see below), whose sum is σ = 114246961. Its totient is φ = 107898880.

The previous prime is 111028363. The next prime is 111028373. The reversal of 111028369 is 963820111.

The square root of 111028369 is 10537.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1030225 + 109998144 = 1015^2 + 10488^2 .

It is not a de Polignac number, because 111028369 - 2³ = 111028361 is a prime.

It is a super-2 number, since 2×111028369² = 24654597445600322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111028369.

It is not an unprimeable number, because it can be changed into a prime (111028361) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 431889 + ... + 432145.

Almost surely, 2^111028369 is an apocalyptic number.

111028369 is the 10537-th square number.

111028369 is the 5269-th centered octagonal number.

It is an amenable number.

111028369 is a deficient number, since it is larger than the sum of its proper divisors (3218592).

111028369 is an frugal number, since it uses more digits than its factorization.

111028369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The cubic root of 111028369 is about 480.6304923606.

The spelling of 111028369 in words is "one hundred eleven million, twenty-eight thousand, three hundred sixty-nine".