111241890 has 32 divisors (see below), whose sum is σ = 296645760. Its totient is φ = 29664432.

The previous prime is 111241861. The next prime is 111241891. The reversal of 111241890 is 98142111.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (111241891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205734 + ... + 206273.

It is an arithmetic number, because the mean of its divisors is an integer number (9270180).

Almost surely, 2^111241890 is an apocalyptic number.

111241890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111241890 is an abundant number, since it is smaller than the sum of its proper divisors (185403870).

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

111241890 is a wasteful number, since it uses less digits than its factorization.

111241890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412023 (or 412017 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 111241890 is about 10547.1270969871. The cubic root of 111241890 is about 480.9383986129.

The spelling of 111241890 in words is "one hundred eleven million, two hundred forty-one thousand, eight hundred ninety".