2544671240 has 128 divisors (see below), whose sum is σ = 6121267200. Its totient is φ = 950019840.

The previous prime is 2544671237. The next prime is 2544671249. The reversal of 2544671240 is 421764452.

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 2544671240.

It is not an unprimeable number, because it can be changed into a prime (2544671249) 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, 10647041 + ... + 10647279.

It is an arithmetic number, because the mean of its divisors is an integer number (47822400).

Almost surely, 2^2544671240 is an apocalyptic number.

2544671240 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 2544671240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3060633600).

2544671240 is an abundant number, since it is smaller than the sum of its proper divisors (3576595960).

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

2544671240 is a wasteful number, since it uses less digits than its factorization.

2544671240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 2544671240 is about 50444.7345121371. The cubic root of 2544671240 is about 1365.2448924846.

The spelling of 2544671240 in words is "two billion, five hundred forty-four million, six hundred seventy-one thousand, two hundred forty".