2321040 has 80 divisors (see below), whose sum is σ = 7588800. Its totient is φ = 585216.

The previous prime is 2321023. The next prime is 2321041. The reversal of 2321040 is 401232.

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

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (2321041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4306 + ... + 4814.

It is an arithmetic number, because the mean of its divisors is an integer number (94860).

2^2321040 is an apocalyptic number.

2321040 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 2321040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3794400).

2321040 is an abundant number, since it is smaller than the sum of its proper divisors (5267760).

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

2321040 is a wasteful number, since it uses less digits than its factorization.

2321040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2321040 is about 1523.4959796468. The cubic root of 2321040 is about 132.4018972416.

Adding to 2321040 its reverse (401232), we get a palindrome (2722272).

The spelling of 2321040 in words is "two million, three hundred twenty-one thousand, forty".