2113890 has 32 divisors (see below), whose sum is σ = 5239296. Its totient is φ = 545280.

The previous prime is 2113879. The next prime is 2113901. The reversal of 2113890 is 983112.

It is an interprime number because it is at equal distance from previous prime (2113879) and next prime (2113901).

It is a self number, because there is not a number n which added to its sum of digits gives 2113890.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207 + ... + 2066.

It is an arithmetic number, because the mean of its divisors is an integer number (163728).

2^2113890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2113890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2619648).

2113890 is an abundant number, since it is smaller than the sum of its proper divisors (3125406).

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

2113890 is a wasteful number, since it uses less digits than its factorization.

2113890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 2113890 is about 1453.9222812792. The cubic root of 2113890 is about 128.3396335057.

It can be divided in two parts, 2113 and 890, that added together give a palindrome (3003).

The spelling of 2113890 in words is "two million, one hundred thirteen thousand, eight hundred ninety".