2640447472 has 40 divisors (see below), whose sum is σ = 5748944544. Its totient is φ = 1165680384.

The previous prime is 2640447431. The next prime is 2640447479. The reversal of 2640447472 is 2747440462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640447479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271183 + ... + 280750.

Almost surely, 2^2640447472 is an apocalyptic number.

It is an amenable number.

2640447472 is an abundant number, since it is smaller than the sum of its proper divisors (3108497072).

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

2640447472 is a wasteful number, since it uses less digits than its factorization.

2640447472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551977 (or 551971 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 40.

The square root of 2640447472 is about 51385.2845861537. The cubic root of 2640447472 is about 1382.1627279773.

The spelling of 2640447472 in words is "two billion, six hundred forty million, four hundred forty-seven thousand, four hundred seventy-two".