2244240 has 80 divisors (see below), whose sum is σ = 7737600. Its totient is φ = 597888.

The previous prime is 2244233. The next prime is 2244257. The reversal of 2244240 is 424422.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2244240² = 10073226355200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1641 + ... + 2679.

It is an arithmetic number, because the mean of its divisors is an integer number (96720).

2^2244240 is an apocalyptic number.

2244240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2244240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3868800).

2244240 is an abundant number, since it is smaller than the sum of its proper divisors (5493360).

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

2244240 is a wasteful number, since it uses less digits than its factorization.

2244240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061 (or 1049 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 2244240 is about 1498.0787696246. The cubic root of 2244240 is about 130.9251558567.

Adding to 2244240 its reverse (424422), we get a palindrome (2668662).

The spelling of 2244240 in words is "two million, two hundred forty-four thousand, two hundred forty".