2543365240 has 128 divisors (see below), whose sum is σ = 6736504320. Its totient is φ = 855244800.

The previous prime is 2543365229. The next prime is 2543365249. The reversal of 2543365240 is 425633452.

2543365240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 2543365196 and 2543365205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543365249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 269400 + ... + 278680.

It is an arithmetic number, because the mean of its divisors is an integer number (52628940).

Almost surely, 2^2543365240 is an apocalyptic number.

2543365240 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 2543365240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3368252160).

2543365240 is an abundant number, since it is smaller than the sum of its proper divisors (4193139080).

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

2543365240 is a wasteful number, since it uses less digits than its factorization.

2543365240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9353 (or 9349 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

The square root of 2543365240 is about 50431.7879913056. The cubic root of 2543365240 is about 1365.0112912607.

Adding to 2543365240 its reverse (425633452), we get a palindrome (2968998692).

The spelling of 2543365240 in words is "two billion, five hundred forty-three million, three hundred sixty-five thousand, two hundred forty".