2105190 has 80 divisors (see below), whose sum is σ = 5959008. Its totient is φ = 532224.

The previous prime is 2105183. The next prime is 2105203. The reversal of 2105190 is 915012.

It is a super-2 number, since 2×2105190² = 8863649872200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18574 + ... + 18686.

2^2105190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2105190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2979504).

2105190 is an abundant number, since it is smaller than the sum of its proper divisors (3853818).

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

2105190 is a wasteful number, since it uses less digits than its factorization.

2105190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 2105190 is about 1450.9272897013. The cubic root of 2105190 is about 128.1633250410.

The spelling of 2105190 in words is "two million, one hundred five thousand, one hundred ninety".