2109696 has 72 divisors (see below), whose sum is σ = 5837664. Its totient is φ = 675840.

The previous prime is 2109671. The next prime is 2109697. The reversal of 2109696 is 6969012.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109697) 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, 31455 + ... + 31521.

2^2109696 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 2109696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2918832).

2109696 is an abundant number, since it is smaller than the sum of its proper divisors (3727968).

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

2109696 is an equidigital number, since it uses as much as digits as its factorization.

2109696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 2109696 is about 1452.4792597487. The cubic root of 2109696 is about 128.2547011793.

The spelling of 2109696 in words is "two million, one hundred nine thousand, six hundred ninety-six".