2543396280 has 128 divisors (see below), whose sum is σ = 8107041600. Its totient is φ = 637120512.

The previous prime is 2543396263. The next prime is 2543396287. The reversal of 2543396280 is 826933452.

2543396280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543396287) 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, 118884 + ... + 138636.

Almost surely, 2^2543396280 is an apocalyptic number.

2543396280 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 2543396280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4053520800).

2543396280 is an abundant number, since it is smaller than the sum of its proper divisors (5563645320).

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

2543396280 is a wasteful number, since it uses less digits than its factorization.

2543396280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19833 (or 19829 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 2543396280 is about 50432.0957327772. The cubic root of 2543396280 is about 1365.0168442420.

The spelling of 2543396280 in words is "two billion, five hundred forty-three million, three hundred ninety-six thousand, two hundred eighty".