2640240712 has 16 divisors (see below), whose sum is σ = 4951219500. Its totient is φ = 1319915520.

The previous prime is 2640240671. The next prime is 2640240727. The reversal of 2640240712 is 2170420462.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2590199236 + 50041476 = 50894^2 + 7074^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38664 + ... + 82312.

Almost surely, 2^2640240712 is an apocalyptic number.

It is an amenable number.

2640240712 is a deficient number, since it is larger than the sum of its proper divisors (2310978788).

2640240712 is a wasteful number, since it uses less digits than its factorization.

2640240712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51216 (or 51212 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 2640240712 is about 51383.2726867412. The cubic root of 2640240712 is about 1382.1266503266.

The spelling of 2640240712 in words is "two billion, six hundred forty million, two hundred forty thousand, seven hundred twelve".