2239664688 has 160 divisors (see below), whose sum is σ = 6799564800. Its totient is φ = 704678400.

The previous prime is 2239664599. The next prime is 2239664689. The reversal of 2239664688 is 8864669322.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (2239664689) 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, 547033 + ... + 551111.

It is an arithmetic number, because the mean of its divisors is an integer number (42497280).

Almost surely, 2^2239664688 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 2239664688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3399782400).

2239664688 is an abundant number, since it is smaller than the sum of its proper divisors (4559900112).

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

2239664688 is a wasteful number, since it uses less digits than its factorization.

2239664688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4168 (or 4156 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The square root of 2239664688 is about 47325.0957526765. The cubic root of 2239664688 is about 1308.3612334492.

The spelling of 2239664688 in words is "two billion, two hundred thirty-nine million, six hundred sixty-four thousand, six hundred eighty-eight".