7247805138 has 24 divisors (see below), whose sum is σ = 17946946368. Its totient is φ = 2070801432.

The previous prime is 7247805121. The next prime is 7247805161. The reversal of 7247805138 is 8315087427.

7247805138 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 7247805093 and 7247805102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28761006 + ... + 28761257.

It is an arithmetic number, because the mean of its divisors is an integer number (747789432).

Almost surely, 2^7247805138 is an apocalyptic number.

7247805138 is an abundant number, since it is smaller than the sum of its proper divisors (10699141230).

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

7247805138 is a wasteful number, since it uses less digits than its factorization.

7247805138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57522278 (or 57522275 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 7247805138 is about 85134.0421805520. The cubic root of 7247805138 is about 1935.2429893357.

The spelling of 7247805138 in words is "seven billion, two hundred forty-seven million, eight hundred five thousand, one hundred thirty-eight".