2621744896 has 72 divisors (see below), whose sum is σ = 5720125824. Its totient is φ = 1193902080.

The previous prime is 2621744869. The next prime is 2621744903. The reversal of 2621744896 is 6984471262.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125196 + ... + 144628.

It is an arithmetic number, because the mean of its divisors is an integer number (79446192).

Almost surely, 2^2621744896 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 2621744896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2860062912).

2621744896 is an abundant number, since it is smaller than the sum of its proper divisors (3098380928).

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

2621744896 is a wasteful number, since it uses less digits than its factorization.

2621744896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19497 (or 19483 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

The square root of 2621744896 is about 51202.9774134278. The cubic root of 2621744896 is about 1378.8916564588.

The spelling of 2621744896 in words is "two billion, six hundred twenty-one million, seven hundred forty-four thousand, eight hundred ninety-six".