111345678 has 40 divisors (see below), whose sum is σ = 251956848. Its totient is φ = 36749376.

The previous prime is 111345673. The next prime is 111345683. The reversal of 111345678 is 876543111.

It is an interprime number because it is at equal distance from previous prime (111345673) and next prime (111345683).

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 (111345673) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13350 + ... + 20022.

Almost surely, 2^111345678 is an apocalyptic number.

111345678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111345678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125978424).

111345678 is an abundant number, since it is smaller than the sum of its proper divisors (140611170).

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

111345678 is a wasteful number, since it uses less digits than its factorization.

111345678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6790 (or 6781 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 111345678 is about 10552.0461522872. The cubic root of 111345678 is about 481.0879229779.

Adding to 111345678 its reverse (876543111), we get a palindrome (987888789).

The spelling of 111345678 in words is "one hundred eleven million, three hundred forty-five thousand, six hundred seventy-eight".