111398880 has 48 divisors (see below), whose sum is σ = 350907984. Its totient is φ = 29706240.

The previous prime is 111398873. The next prime is 111398887. The reversal of 111398880 is 88893111.

It is an interprime number because it is at equal distance from previous prime (111398873) and next prime (111398887).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111398887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115561 + ... + 116520.

It is an arithmetic number, because the mean of its divisors is an integer number (7310583).

Almost surely, 2^111398880 is an apocalyptic number.

111398880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111398880 is an abundant number, since it is smaller than the sum of its proper divisors (239509104).

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

111398880 is a wasteful number, since it uses less digits than its factorization.

111398880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232099 (or 232091 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 39.

The square root of 111398880 is about 10554.5667840987. The cubic root of 111398880 is about 481.1645335380.

The spelling of 111398880 in words is "one hundred eleven million, three hundred ninety-eight thousand, eight hundred eighty".