2161344 has 28 divisors (see below), whose sum is σ = 5719064. Its totient is φ = 720384.

The previous prime is 2161343. The next prime is 2161349. The reversal of 2161344 is 4431612.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2161344.

It is not an unprimeable number, because it can be changed into a prime (2161343) 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, 5437 + ... + 5820.

2^2161344 is an apocalyptic number.

2161344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2161344 is an abundant number, since it is smaller than the sum of its proper divisors (3557720).

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

2161344 is a wasteful number, since it uses less digits than its factorization.

2161344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11272 (or 11262 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 2161344 is about 1470.1510126514. The cubic root of 2161344 is about 129.2928865859.

Adding to 2161344 its reverse (4431612), we get a palindrome (6592956).

The spelling of 2161344 in words is "two million, one hundred sixty-one thousand, three hundred forty-four".