2191336 has 32 divisors (see below), whose sum is σ = 4752000. Its totient is φ = 927936.

The previous prime is 2191331. The next prime is 2191337. The reversal of 2191336 is 6331912.

It is a self number, because there is not a number n which added to its sum of digits gives 2191336.

It is not an unprimeable number, because it can be changed into a prime (2191331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5925 + ... + 6283.

It is an arithmetic number, because the mean of its divisors is an integer number (148500).

2^2191336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2191336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2376000).

2191336 is an abundant number, since it is smaller than the sum of its proper divisors (2560664).

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

2191336 is a wasteful number, since it uses less digits than its factorization.

2191336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 477 counting only the distinct ones).

The product of its digits is 972, while the sum is 25.

The square root of 2191336 is about 1480.3161824421. The cubic root of 2191336 is about 129.8881878824. Note that the first 3 decimals are identical.

The spelling of 2191336 in words is "two million, one hundred ninety-one thousand, three hundred thirty-six".