2271724 has 36 divisors (see below), whose sum is σ = 4955664. Its totient is φ = 887328.

The previous prime is 2271721. The next prime is 2271743. The reversal of 2271724 is 4271722.

2271724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2271724³ = 35171262133327774272, which contains 333 as substring.

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 (2271721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28717 + ... + 28795.

2^2271724 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 2271724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2477832).

2271724 is an abundant number, since it is smaller than the sum of its proper divisors (2683940).

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

2271724 is a wasteful number, since it uses less digits than its factorization.

2271724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 101 counting only the distinct ones).

The product of its digits is 1568, while the sum is 25.

The square root of 2271724 is about 1507.2239382388. The cubic root of 2271724 is about 131.4574454969.

The spelling of 2271724 in words is "two million, two hundred seventy-one thousand, seven hundred twenty-four".