8072807640 has 64 divisors (see below), whose sum is σ = 24224659200. Its totient is φ = 2152194432.

The previous prime is 8072807621. The next prime is 8072807641. The reversal of 8072807640 is 467082708.

It is a junction number, because it is equal to n+sod(n) for n = 8072807592 and 8072807601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8072807641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699759 + ... + 711201.

It is an arithmetic number, because the mean of its divisors is an integer number (378510300).

Almost surely, 2^8072807640 is an apocalyptic number.

It is an amenable number.

8072807640 is an abundant number, since it is smaller than the sum of its proper divisors (16151851560).

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

8072807640 is a wasteful number, since it uses less digits than its factorization.

8072807640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17336 (or 17332 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 8072807640 is about 89848.8043326120. The cubic root of 8072807640 is about 2006.0489897503.

The spelling of 8072807640 in words is "eight billion, seventy-two million, eight hundred seven thousand, six hundred forty".