2116890 has 48 divisors (see below), whose sum is σ = 5642208. Its totient is φ = 550368.

The previous prime is 2116867. The next prime is 2116901. The reversal of 2116890 is 986112.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3597 + ... + 4143.

It is an arithmetic number, because the mean of its divisors is an integer number (117546).

2^2116890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2116890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2821104).

2116890 is an abundant number, since it is smaller than the sum of its proper divisors (3525318).

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

2116890 is a wasteful number, since it uses less digits than its factorization.

2116890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2116890 is about 1454.9536075078. The cubic root of 2116890 is about 128.4003173486.

The spelling of 2116890 in words is "two million, one hundred sixteen thousand, eight hundred ninety".