2291744 has 48 divisors (see below), whose sum is σ = 5560128. Its totient is φ = 905472.

The previous prime is 2291717. The next prime is 2291747. The reversal of 2291744 is 4471922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291747) 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, 2519 + ... + 3305.

It is an arithmetic number, because the mean of its divisors is an integer number (115836).

2^2291744 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 2291744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2780064).

2291744 is an abundant number, since it is smaller than the sum of its proper divisors (3268384).

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

2291744 is a wasteful number, since it uses less digits than its factorization.

2291744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 809 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 2291744 is about 1513.8507191926. The cubic root of 2291744 is about 131.8424812192.

The spelling of 2291744 in words is "two million, two hundred ninety-one thousand, seven hundred forty-four".