2640815034 has 64 divisors (see below), whose sum is σ = 6216352128. Its totient is φ = 737337600.

The previous prime is 2640815033. The next prime is 2640815039. The reversal of 2640815034 is 4305180462.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2640814986 and 2640815004.

It is not an unprimeable number, because it can be changed into a prime (2640815033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 523444 + ... + 528464.

It is an arithmetic number, because the mean of its divisors is an integer number (97130502).

Almost surely, 2^2640815034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2640815034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3108176064).

2640815034 is an abundant number, since it is smaller than the sum of its proper divisors (3575537094).

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

2640815034 is a wasteful number, since it uses less digits than its factorization.

2640815034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5663.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 2640815034 is about 51388.8609914639. The cubic root of 2640815034 is about 1382.2268593957.

Adding to 2640815034 its reverse (4305180462), we get a palindrome (6945995496).

The spelling of 2640815034 in words is "two billion, six hundred forty million, eight hundred fifteen thousand, thirty-four".