2191960 has 16 divisors (see below), whose sum is σ = 4932000. Its totient is φ = 876768.

The previous prime is 2191957. The next prime is 2191967. The reversal of 2191960 is 691912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27360 + ... + 27439.

It is an arithmetic number, because the mean of its divisors is an integer number (308250).

2^2191960 is an apocalyptic number.

2191960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2191960 is an abundant number, since it is smaller than the sum of its proper divisors (2740040).

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

2191960 is a wasteful number, since it uses less digits than its factorization.

2191960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54810 (or 54806 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 2191960 is about 1480.5269332234. The cubic root of 2191960 is about 129.9005156035.

The spelling of 2191960 in words is "two million, one hundred ninety-one thousand, nine hundred sixty".