2191926 has 16 divisors (see below), whose sum is σ = 4782528. Its totient is φ = 664200.

The previous prime is 2191883. The next prime is 2191949. The reversal of 2191926 is 6291912.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2191893 and 2191902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16540 + ... + 16671.

It is an arithmetic number, because the mean of its divisors is an integer number (298908).

2^2191926 is an apocalyptic number.

2191926 is an abundant number, since it is smaller than the sum of its proper divisors (2590602).

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

2191926 is a wasteful number, since it uses less digits than its factorization.

2191926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33227.

The product of its digits is 1944, while the sum is 30.

The square root of 2191926 is about 1480.5154507806. The cubic root of 2191926 is about 129.8998439610.

It can be divided in two parts, 21919 and 26, that added together give a triangular number (21945 = T₂₀₉).

The spelling of 2191926 in words is "two million, one hundred ninety-one thousand, nine hundred twenty-six".