7816227140 has 12 divisors (see below), whose sum is σ = 16414077036. Its totient is φ = 3126490848.

The previous prime is 7816227073. The next prime is 7816227143. The reversal of 7816227140 is 417226187.

It can be written as a sum of positive squares in 2 ways, for example, as 5395783936 + 2420443204 = 73456^2 + 49198^2 .

It is a super-2 number, since 2×7816227140² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7816227094 and 7816227103.

It is not an unprimeable number, because it can be changed into a prime (7816227143) 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, 195405659 + ... + 195405698.

It is an arithmetic number, because the mean of its divisors is an integer number (1367839753).

Almost surely, 2^7816227140 is an apocalyptic number.

It is an amenable number.

7816227140 is an abundant number, since it is smaller than the sum of its proper divisors (8597849896).

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

7816227140 is a wasteful number, since it uses less digits than its factorization.

7816227140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390811366 (or 390811364 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 7816227140 is about 88409.4290220223. The cubic root of 7816227140 is about 1984.5668096452.

The spelling of 7816227140 in words is "seven billion, eight hundred sixteen million, two hundred twenty-seven thousand, one hundred forty".