2640047432 has 32 divisors (see below), whose sum is σ = 5427544320. Its totient is φ = 1193922240.

The previous prime is 2640047407. The next prime is 2640047437. The reversal of 2640047432 is 2347400462.

It is not an unprimeable number, because it can be changed into a prime (2640047437) 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, 58808 + ... + 93479.

It is an arithmetic number, because the mean of its divisors is an integer number (169610760).

Almost surely, 2^2640047432 is an apocalyptic number.

2640047432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2640047432 is an abundant number, since it is smaller than the sum of its proper divisors (2787496888).

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

2640047432 is a wasteful number, since it uses less digits than its factorization.

2640047432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152501 (or 152497 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 32.

The square root of 2640047432 is about 51381.3918846113. The cubic root of 2640047432 is about 1382.0929231040.

Adding to 2640047432 its reverse (2347400462), we get a palindrome (4987447894).

The spelling of 2640047432 in words is "two billion, six hundred forty million, forty-seven thousand, four hundred thirty-two".