111745998 has 96 divisors (see below), whose sum is σ = 315596736. Its totient is φ = 27730944.

The previous prime is 111745967. The next prime is 111745999. The reversal of 111745998 is 899547111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111745999) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25840 + ... + 29852.

It is an arithmetic number, because the mean of its divisors is an integer number (3287466).

Almost surely, 2^111745998 is an apocalyptic number.

111745998 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 111745998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157798368).

111745998 is an abundant number, since it is smaller than the sum of its proper divisors (203850738).

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

111745998 is a wasteful number, since it uses less digits than its factorization.

111745998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4058 (or 4055 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 111745998 is about 10570.9979661336. The cubic root of 111745998 is about 481.6637835954.

The spelling of 111745998 in words is "one hundred eleven million, seven hundred forty-five thousand, nine hundred ninety-eight".