2540244432 has 80 divisors (see below), whose sum is σ = 7265820672. Its totient is φ = 758271360.

The previous prime is 2540244409. The next prime is 2540244433. The reversal of 2540244432 is 2344420452.

It is a self number, because there is not a number n which added to its sum of digits gives 2540244432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540244433) 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, 528 + ... + 71279.

Almost surely, 2^2540244432 is an apocalyptic number.

2540244432 is a gapful number since it is divisible by the number (22) 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 2540244432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3632910336).

2540244432 is an abundant number, since it is smaller than the sum of its proper divisors (4725576240).

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

2540244432 is a wasteful number, since it uses less digits than its factorization.

2540244432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71896 (or 71890 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

The square root of 2540244432 is about 50400.8376120874. The cubic root of 2540244432 is about 1364.4527554477.

Adding to 2540244432 its reverse (2344420452), we get a palindrome (4884664884).

The spelling of 2540244432 in words is "two billion, five hundred forty million, two hundred forty-four thousand, four hundred thirty-two".