111481398 has 48 divisors (see below), whose sum is σ = 290584320. Its totient is φ = 30174768.

The previous prime is 111481397. The next prime is 111481429. The reversal of 111481398 is 893184111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111481397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20890 + ... + 25677.

It is an arithmetic number, because the mean of its divisors is an integer number (6053840).

Almost surely, 2^111481398 is an apocalyptic number.

111481398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

111481398 is an abundant number, since it is smaller than the sum of its proper divisors (179102922).

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

111481398 is a wasteful number, since it uses less digits than its factorization.

111481398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46601 (or 46598 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 111481398 is about 10558.4751740012. The cubic root of 111481398 is about 481.2833107206.

The spelling of 111481398 in words is "one hundred eleven million, four hundred eighty-one thousand, three hundred ninety-eight".