2111898 has 16 divisors (see below), whose sum is σ = 4314240. Its totient is φ = 688896.

The previous prime is 2111897. The next prime is 2111909. The reversal of 2111898 is 8981112.

It is a super-2 number, since 2×2111898² = 8920226324808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2111897) 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, 3463 + ... + 4026.

It is an arithmetic number, because the mean of its divisors is an integer number (269640).

2^2111898 is an apocalyptic number.

2111898 is an abundant number, since it is smaller than the sum of its proper divisors (2202342).

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

2111898 is a wasteful number, since it uses less digits than its factorization.

2111898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7541.

The product of its digits is 1152, while the sum is 30.

The square root of 2111898 is about 1453.2370763231. The cubic root of 2111898 is about 128.2993077089.

The spelling of 2111898 in words is "two million, one hundred eleven thousand, eight hundred ninety-eight".