7812308136 has 64 divisors (see below), whose sum is σ = 19627747200. Its totient is φ = 2591209728.

The previous prime is 7812308111. The next prime is 7812308137. The reversal of 7812308136 is 6318032187.

It is a super-2 number, since 2×7812308136² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7812308094 and 7812308103.

It is not an unprimeable number, because it can be changed into a prime (7812308137) 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, 6314910 + ... + 6316146.

It is an arithmetic number, because the mean of its divisors is an integer number (306683550).

Almost surely, 2^7812308136 is an apocalyptic number.

It is an amenable number.

7812308136 is an abundant number, since it is smaller than the sum of its proper divisors (11815439064).

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

7812308136 is a wasteful number, since it uses less digits than its factorization.

7812308136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338 (or 2334 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 7812308136 is about 88387.2622949710. The cubic root of 7812308136 is about 1984.2350713545.

The spelling of 7812308136 in words is "seven billion, eight hundred twelve million, three hundred eight thousand, one hundred thirty-six".