2621440008 has 96 divisors (see below), whose sum is σ = 7773386400. Its totient is φ = 791481600.

The previous prime is 2621439983. The next prime is 2621440009. The reversal of 2621440008 is 8000441262.

It is not an unprimeable number, because it can be changed into a prime (2621440009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216663 + ... + 228441.

It is an arithmetic number, because the mean of its divisors is an integer number (80972775).

Almost surely, 2^2621440008 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 2621440008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3886693200).

2621440008 is an abundant number, since it is smaller than the sum of its proper divisors (5151946392).

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

2621440008 is a wasteful number, since it uses less digits than its factorization.

2621440008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12083 (or 12076 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 2621440008 is about 51200.0000781250. Note that the first 4 decimals coincide. The cubic root of 2621440008 is about 1378.8382030230.

It can be divided in two parts, 262144000 and 8, that multiplied together give a cube (2097152000 = 1280³).

The spelling of 2621440008 in words is "two billion, six hundred twenty-one million, four hundred forty thousand, eight".