2271744 has 120 divisors (see below), whose sum is σ = 7181460. Its totient is φ = 688128.

The previous prime is 2271743. The next prime is 2271749. The reversal of 2271744 is 4471722.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2214144 + 57600 = 1488^2 + 240^2 .

It is a zygodrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (2271743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78322 + ... + 78350.

2^2271744 is an apocalyptic number.

2271744 is a gapful number since it is divisible by the number (24) 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 2271744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3590730).

2271744 is an abundant number, since it is smaller than the sum of its proper divisors (4909716).

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

2271744 is a wasteful number, since it uses less digits than its factorization.

2271744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 51 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 2271744 is about 1507.2305729383. The cubic root of 2271744 is about 131.4578312746.

The spelling of 2271744 in words is "two million, two hundred seventy-one thousand, seven hundred forty-four".