111428286 has 16 divisors (see below), whose sum is σ = 223050000. Its totient is φ = 37110528.

The previous prime is 111428269. The next prime is 111428287. The reversal of 111428286 is 682824111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111428287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60 + ... + 14928.

It is an arithmetic number, because the mean of its divisors is an integer number (13940625).

Almost surely, 2^111428286 is an apocalyptic number.

111428286 is an abundant number, since it is smaller than the sum of its proper divisors (111621714).

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

111428286 is a wasteful number, since it uses less digits than its factorization.

111428286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16123.

The product of its digits is 6144, while the sum is 33.

The square root of 111428286 is about 10555.9597384605. The cubic root of 111428286 is about 481.2068675348.

The spelling of 111428286 in words is "one hundred eleven million, four hundred twenty-eight thousand, two hundred eighty-six".