2640446700 has 144 divisors (see below), whose sum is σ = 7970156544. Its totient is φ = 674150400.

The previous prime is 2640446689. The next prime is 2640446729. The reversal of 2640446700 is 76440462.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 900637 + ... + 903563.

Almost surely, 2^2640446700 is an apocalyptic number.

2640446700 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 2640446700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3985078272).

2640446700 is an abundant number, since it is smaller than the sum of its proper divisors (5329709844).

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

2640446700 is a wasteful number, since it uses less digits than its factorization.

2640446700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072 (or 3065 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 2640446700 is about 51385.2770742749. The cubic root of 2640446700 is about 1382.1625932742.

The spelling of 2640446700 in words is "two billion, six hundred forty million, four hundred forty-six thousand, seven hundred".