2640263872 has 28 divisors (see below), whose sum is σ = 5241203640. Its totient is φ = 1319645696.

The previous prime is 2640263851. The next prime is 2640263881. The reversal of 2640263872 is 2783620462.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220668 + ... + 232324.

Almost surely, 2^2640263872 is an apocalyptic number.

It is an amenable number.

2640263872 is a deficient number, since it is larger than the sum of its proper divisors (2600939768).

2640263872 is a wasteful number, since it uses less digits than its factorization.

2640263872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15208 (or 15198 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 2640263872 is about 51383.4980514172. The cubic root of 2640263872 is about 1382.1306916196.

The spelling of 2640263872 in words is "two billion, six hundred forty million, two hundred sixty-three thousand, eight hundred seventy-two".