2191712 has 12 divisors (see below), whose sum is σ = 4314996. Its totient is φ = 1095840.

The previous prime is 2191711. The next prime is 2191723. The reversal of 2191712 is 2171912.

It is a super-3 number, since 3×2191712³ = 31584333092759568384, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34214 + ... + 34277.

It is an arithmetic number, because the mean of its divisors is an integer number (359583).

2^2191712 is an apocalyptic number.

It is an amenable number.

2191712 is a deficient number, since it is larger than the sum of its proper divisors (2123284).

2191712 is an equidigital number, since it uses as much as digits as its factorization.

2191712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68501 (or 68493 counting only the distinct ones).

The product of its digits is 252, while the sum is 23.

The square root of 2191712 is about 1480.4431768899. The cubic root of 2191712 is about 129.8956164048.

The spelling of 2191712 in words is "two million, one hundred ninety-one thousand, seven hundred twelve".