2640000036 has 48 divisors (see below), whose sum is σ = 6391607040. Its totient is φ = 847096320.

The previous prime is 2640000031. The next prime is 2640000043. The reversal of 2640000036 is 6300000462.

It is a junction number, because it is equal to n+sod(n) for n = 2639999967 and 2640000021.

It is not an unprimeable number, because it can be changed into a prime (2640000031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106021 + ... + 128531.

It is an arithmetic number, because the mean of its divisors is an integer number (133158480).

Almost surely, 2^2640000036 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 2640000036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3195803520).

2640000036 is an abundant number, since it is smaller than the sum of its proper divisors (3751607004).

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

2640000036 is a wasteful number, since it uses less digits than its factorization.

2640000036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22884 (or 22882 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2640000036 is about 51380.9306649850. The cubic root of 2640000036 is about 1382.0846522844.

Adding to 2640000036 its reverse (6300000462), we get a palindrome (8940000498).

The spelling of 2640000036 in words is "two billion, six hundred forty million, thirty-six", and thus it is an aban number.