2321706240 has 540 divisors, whose sum is σ = 9684960516. Its totient is φ = 529514496.

The previous prime is 2321706187. The next prime is 2321706241. The reversal of 2321706240 is 426071232.

2321706240 is a `hidden beast` number, since 2 + 32 + 1 + 7 + 0 + 624 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1467196416 + 854509824 = 38304^2 + 29232^2 .

It is a tau number, because it is divible by the number of its divisors (540).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321706241) 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 59 ways as a sum of consecutive naturals, for example, 5080092 + ... + 5080548.

Almost surely, 2^2321706240 is an apocalyptic number.

2321706240 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 2321706240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4842480258).

2321706240 is an abundant number, since it is smaller than the sum of its proper divisors (7363254276).

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

2321706240 is an equidigital number, since it uses as much as digits as its factorization.

2321706240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 2321706240 is about 48184.0869997554. The cubic root of 2321706240 is about 1324.1456440822.

Adding to 2321706240 its reverse (426071232), we get a palindrome (2747777472).

The spelling of 2321706240 in words is "two billion, three hundred twenty-one million, seven hundred six thousand, two hundred forty".