2117444 has 24 divisors (see below), whose sum is σ = 4327680. Its totient is φ = 887616.

The previous prime is 2117441. The next prime is 2117447. The reversal of 2117444 is 4447112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2117441) and next prime (2117447).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (2117441) 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, 512 + ... + 2120.

It is an arithmetic number, because the mean of its divisors is an integer number (180320).

2^2117444 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 2117444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2163840).

2117444 is an abundant number, since it is smaller than the sum of its proper divisors (2210236).

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

2117444 is a wasteful number, since it uses less digits than its factorization.

2117444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667 (or 1665 counting only the distinct ones).

The product of its digits is 896, while the sum is 23.

The square root of 2117444 is about 1455.1439791306. The cubic root of 2117444 is about 128.4115173592.

The spelling of 2117444 in words is "two million, one hundred seventeen thousand, four hundred forty-four".