111444678 has 12 divisors (see below), whose sum is σ = 241463508. Its totient is φ = 37148220.

The previous prime is 111444677. The next prime is 111444679. The reversal of 111444678 is 876444111.

It is an interprime number because it is at equal distance from previous prime (111444677) and next prime (111444679).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111444677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3095668 + ... + 3095703.

It is an arithmetic number, because the mean of its divisors is an integer number (20121959).

Almost surely, 2^111444678 is an apocalyptic number.

111444678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

111444678 is an abundant number, since it is smaller than the sum of its proper divisors (130018830).

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

111444678 is a wasteful number, since it uses less digits than its factorization.

111444678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6191379 (or 6191376 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 111444678 is about 10556.7361433352. The cubic root of 111444678 is about 481.2304628489.

Adding to 111444678 its reverse (876444111), we get a palindrome (987888789).

The spelling of 111444678 in words is "one hundred eleven million, four hundred forty-four thousand, six hundred seventy-eight".