2640079232 has 64 divisors (see below), whose sum is σ = 6133668000. Its totient is φ = 1131443712.

The previous prime is 2640079217. The next prime is 2640079283. The reversal of 2640079232 is 2329700462.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 2640079192 and 2640079201.

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, 13838 + ... + 73970.

Almost surely, 2^2640079232 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 2640079232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3066834000).

2640079232 is an abundant number, since it is smaller than the sum of its proper divisors (3493588768).

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

2640079232 is an frugal number, since it uses more digits than its factorization.

2640079232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60168 (or 60142 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 2640079232 is about 51381.7013342299. The cubic root of 2640079232 is about 1382.0984722946.

Adding to 2640079232 its reverse (2329700462), we get a palindrome (4969779694).

The spelling of 2640079232 in words is "two billion, six hundred forty million, seventy-nine thousand, two hundred thirty-two".