2640307260 has 48 divisors (see below), whose sum is σ = 7781961600. Its totient is φ = 667024704.

The previous prime is 2640307249. The next prime is 2640307261. The reversal of 2640307260 is 627030462.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640307261) 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 15 ways as a sum of consecutive naturals, for example, 1156890 + ... + 1159169.

It is an arithmetic number, because the mean of its divisors is an integer number (162124200).

Almost surely, 2^2640307260 is an apocalyptic number.

2640307260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640307260 is an abundant number, since it is smaller than the sum of its proper divisors (5141654340).

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

2640307260 is a wasteful number, since it uses less digits than its factorization.

2640307260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316090 (or 2316088 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 2640307260 is about 51383.9202474860. The cubic root of 2640307260 is about 1382.1382625243.

The spelling of 2640307260 in words is "two billion, six hundred forty million, three hundred seven thousand, two hundred sixty".