2321724 has 48 divisors (see below), whose sum is σ = 6048000. Its totient is φ = 688896.

The previous prime is 2321701. The next prime is 2321747. The reversal of 2321724 is 4271232.

It is an interprime number because it is at equal distance from previous prime (2321701) and next prime (2321747).

It is a self number, because there is not a number n which added to its sum of digits gives 2321724.

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, 3577 + ... + 4175.

It is an arithmetic number, because the mean of its divisors is an integer number (126000).

2^2321724 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 2321724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3024000).

2321724 is an abundant number, since it is smaller than the sum of its proper divisors (3726276).

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

2321724 is a wasteful number, since it uses less digits than its factorization.

2321724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 640 counting only the distinct ones).

The product of its digits is 672, while the sum is 21.

The square root of 2321724 is about 1523.7204468012. The cubic root of 2321724 is about 132.4149020445.

Adding to 2321724 its reverse (4271232), we get a palindrome (6592956).

The spelling of 2321724 in words is "two million, three hundred twenty-one thousand, seven hundred twenty-four".