2543887404 has 96 divisors (see below), whose sum is σ = 6876334080. Its totient is φ = 812376000.

The previous prime is 2543887403. The next prime is 2543887519. The reversal of 2543887404 is 4047883452.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2543887404.

It is not an unprimeable number, because it can be changed into a prime (2543887403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334387 + ... + 341909.

It is an arithmetic number, because the mean of its divisors is an integer number (71628480).

Almost surely, 2^2543887404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2543887404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3438167040).

2543887404 is an abundant number, since it is smaller than the sum of its proper divisors (4332446676).

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

2543887404 is a wasteful number, since it uses less digits than its factorization.

2543887404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7668 (or 7660 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

The square root of 2543887404 is about 50436.9646588690. The cubic root of 2543887404 is about 1365.1046991301.

The spelling of 2543887404 in words is "two billion, five hundred forty-three million, eight hundred eighty-seven thousand, four hundred four".