2194686 has 48 divisors (see below), whose sum is σ = 5228496. Its totient is φ = 661248.

The previous prime is 2194679. The next prime is 2194697. The reversal of 2194686 is 6864912.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 2194686.

It is a congruent 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, 19366 + ... + 19478.

It is an arithmetic number, because the mean of its divisors is an integer number (108927).

2^2194686 is an apocalyptic number.

2194686 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2194686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2614248).

2194686 is an abundant number, since it is smaller than the sum of its proper divisors (3033810).

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

2194686 is a wasteful number, since it uses less digits than its factorization.

2194686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 214 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 2194686 is about 1481.4472653456. The cubic root of 2194686 is about 129.9543429411.

The spelling of 2194686 in words is "two million, one hundred ninety-four thousand, six hundred eighty-six".