2544215872 has 56 divisors (see below), whose sum is σ = 5513649120. Its totient is φ = 1155202560.

The previous prime is 2544215851. The next prime is 2544215887. The reversal of 2544215872 is 2785124452.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025898 + ... + 1028374.

It is an arithmetic number, because the mean of its divisors is an integer number (98458020).

Almost surely, 2^2544215872 is an apocalyptic number.

2544215872 is a gapful number since it is divisible by the number (22) 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 2544215872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2756824560).

2544215872 is an abundant number, since it is smaller than the sum of its proper divisors (2969433248).

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

2544215872 is a wasteful number, since it uses less digits than its factorization.

2544215872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3959 (or 3949 counting only the distinct ones).

The product of its digits is 179200, while the sum is 40.

The square root of 2544215872 is about 50440.2207766778. The cubic root of 2544215872 is about 1365.1634509328.

It can be divided in two parts, 25442 and 15872, that added together give a palindrome (41314).

The spelling of 2544215872 in words is "two billion, five hundred forty-four million, two hundred fifteen thousand, eight hundred seventy-two".