111428893 has 4 divisors (see below), whose sum is σ = 111486528. Its totient is φ = 111371260.

The previous prime is 111428873. The next prime is 111428899. The reversal of 111428893 is 398824111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111428893 - 2⁵ = 111428861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111428899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25813 + ... + 29818.

It is an arithmetic number, because the mean of its divisors is an integer number (27871632).

Almost surely, 2^111428893 is an apocalyptic number.

It is an amenable number.

111428893 is a deficient number, since it is larger than the sum of its proper divisors (57635).

111428893 is an equidigital number, since it uses as much as digits as its factorization.

111428893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57634.

The product of its digits is 13824, while the sum is 37.

The square root of 111428893 is about 10555.9884899520. The cubic root of 111428893 is about 481.2077413166.

The spelling of 111428893 in words is "one hundred eleven million, four hundred twenty-eight thousand, eight hundred ninety-three".