111245680 has 240 divisors, whose sum is σ = 338415840. Its totient is φ = 33675264.

The previous prime is 111245611. The next prime is 111245689. The reversal of 111245680 is 86542111.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111245689) 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 47 ways as a sum of consecutive naturals, for example, 1885491 + ... + 1885549.

It is an arithmetic number, because the mean of its divisors is an integer number (1410066).

Almost surely, 2^111245680 is an apocalyptic number.

111245680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111245680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169207920).

111245680 is an abundant number, since it is smaller than the sum of its proper divisors (227170160).

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

111245680 is a wasteful number, since it uses less digits than its factorization.

111245680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 111245680 is about 10547.3067652363. The cubic root of 111245680 is about 480.9438603918.

Adding to 111245680 its reverse (86542111), we get a palindrome (197787791).

The spelling of 111245680 in words is "one hundred eleven million, two hundred forty-five thousand, six hundred eighty".