30478138244 has 12 divisors (see below), whose sum is σ = 53338945884. Its totient is φ = 15238439424.

The previous prime is 30478138193. The next prime is 30478138253. The reversal of 30478138244 is 44283187403.

It can be written as a sum of positive squares in 2 ways, for example, as 20920729600 + 9557408644 = 144640^2 + 97762^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30478138195 and 30478138204.

It is an unprimeable number.

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, 38549 + ... + 249884.

It is an arithmetic number, because the mean of its divisors is an integer number (4444912157).

Almost surely, 2^30478138244 is an apocalyptic number.

It is an amenable number.

30478138244 is a deficient number, since it is larger than the sum of its proper divisors (22860807640).

30478138244 is a wasteful number, since it uses less digits than its factorization.

30478138244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314854 (or 314852 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 30478138244 in words is "thirty billion, four hundred seventy-eight million, one hundred thirty-eight thousand, two hundred forty-four".