2640046020 has 48 divisors (see below), whose sum is σ = 7395174528. Its totient is φ = 703722240.

The previous prime is 2640045983. The next prime is 2640046021. The reversal of 2640046020 is 206400462.

It is not an unprimeable number, because it can be changed into a prime (2640046021) 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, 165600 + ... + 180840.

It is an arithmetic number, because the mean of its divisors is an integer number (154066136).

Almost surely, 2^2640046020 is an apocalyptic number.

2640046020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640046020 is an abundant number, since it is smaller than the sum of its proper divisors (4755128508).

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

2640046020 is a wasteful number, since it uses less digits than its factorization.

2640046020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18140 (or 18138 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2640046020 is about 51381.3781442265. The cubic root of 2640046020 is about 1382.0926767050.

Adding to 2640046020 its reverse (206400462), we get a palindrome (2846446482).

The spelling of 2640046020 in words is "two billion, six hundred forty million, forty-six thousand, twenty".