2543332440 has 64 divisors (see below), whose sum is σ = 8323637760. Its totient is φ = 616565120.

The previous prime is 2543332417. The next prime is 2543332453. The reversal of 2543332440 is 442333452.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2543332398 and 2543332407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 962064 + ... + 964703.

It is an arithmetic number, because the mean of its divisors is an integer number (130056840).

Almost surely, 2^2543332440 is an apocalyptic number.

2543332440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2543332440 is an abundant number, since it is smaller than the sum of its proper divisors (5780305320).

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

2543332440 is a wasteful number, since it uses less digits than its factorization.

2543332440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926792 (or 1926788 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 30.

The square root of 2543332440 is about 50431.4627985348. The cubic root of 2543332440 is about 1365.0054233707.

2543332440 divided by its sum of digits (30) gives a palindrome (84777748).

Adding to 2543332440 its reverse (442333452), we get a palindrome (2985665892).

The spelling of 2543332440 in words is "two billion, five hundred forty-three million, three hundred thirty-two thousand, four hundred forty".