2111128 has 48 divisors (see below), whose sum is σ = 4526280. Its totient is φ = 919296.

The previous prime is 2111107. The next prime is 2111129. The reversal of 2111128 is 8211112.

It is a super-2 number, since 2×2111128² = 8913722864768, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49075 + ... + 49117.

2^2111128 is an apocalyptic number.

It is an amenable number.

2111128 is an abundant number, since it is smaller than the sum of its proper divisors (2415152).

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

2111128 is a wasteful number, since it uses less digits than its factorization.

2111128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 81 counting only the distinct ones).

The product of its digits is 32, while the sum is 16.

The square root of 2111128 is about 1452.9721263672. The cubic root of 2111128 is about 128.2837131306.

Subtracting from 2111128 its sum of digits (16), we obtain a palindrome (2111112).

The spelling of 2111128 in words is "two million, one hundred eleven thousand, one hundred twenty-eight".