7827760812 has 12 divisors (see below), whose sum is σ = 18264775256. Its totient is φ = 2609253600.

The previous prime is 7827760799. The next prime is 7827760813. The reversal of 7827760812 is 2180677287.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×7827760812² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7827760813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326156689 + ... + 326156712.

Almost surely, 2^7827760812 is an apocalyptic number.

It is an amenable number.

7827760812 is an abundant number, since it is smaller than the sum of its proper divisors (10437014444).

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

7827760812 is a wasteful number, since it uses less digits than its factorization.

7827760812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652313408 (or 652313406 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 48.

The square root of 7827760812 is about 88474.6337206320. The cubic root of 7827760812 is about 1985.5424761615.

The spelling of 7827760812 in words is "seven billion, eight hundred twenty-seven million, seven hundred sixty thousand, eight hundred twelve".