2640248080 has 20 divisors (see below), whose sum is σ = 6138576972. Its totient is φ = 1056099200.

The previous prime is 2640248071. The next prime is 2640248089. The reversal of 2640248080 is 808420462.

It is an interprime number because it is at equal distance from previous prime (2640248071) and next prime (2640248089).

It can be written as a sum of positive squares in 2 ways, for example, as 1436713216 + 1203534864 = 37904^2 + 34692^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (2640248089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16501471 + ... + 16501630.

Almost surely, 2^2640248080 is an apocalyptic number.

2640248080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640248080 is an abundant number, since it is smaller than the sum of its proper divisors (3498328892).

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

2640248080 is a wasteful number, since it uses less digits than its factorization.

2640248080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33003114 (or 33003108 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 2640248080 is about 51383.3443831754. The cubic root of 2640248080 is about 1382.1279360047.

The spelling of 2640248080 in words is "two billion, six hundred forty million, two hundred forty-eight thousand, eighty".