7815682628 has 12 divisors (see below), whose sum is σ = 14729555820. Its totient is φ = 3607238112.

The previous prime is 7815682621. The next prime is 7815682631. The reversal of 7815682628 is 8262865187.

It can be written as a sum of positive squares in 2 ways, for example, as 4030726144 + 3784956484 = 63488^2 + 61522^2 .

It is a super-2 number, since 2×7815682628² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7815682628.

It is not an unprimeable number, because it can be changed into a prime (7815682621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75150743 + ... + 75150846.

It is an arithmetic number, because the mean of its divisors is an integer number (1227462985).

Almost surely, 2^7815682628 is an apocalyptic number.

It is an amenable number.

7815682628 is a deficient number, since it is larger than the sum of its proper divisors (6913873192).

7815682628 is a wasteful number, since it uses less digits than its factorization.

7815682628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150301606 (or 150301604 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 53.

The square root of 7815682628 is about 88406.3494778514. The cubic root of 7815682628 is about 1984.5207240885.

The spelling of 7815682628 in words is "seven billion, eight hundred fifteen million, six hundred eighty-two thousand, six hundred twenty-eight".