71048138 has 24 divisors (see below), whose sum is σ = 125730144. Its totient is φ = 30017400.

The previous prime is 71048137. The next prime is 71048149. The reversal of 71048138 is 83184017.

It is not an unprimeable number, because it can be changed into a prime (71048137) by changing a digit.

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, 1853 + ... + 12063.

It is an arithmetic number, because the mean of its divisors is an integer number (5238756).

Almost surely, 2^71048138 is an apocalyptic number.

71048138 is a deficient number, since it is larger than the sum of its proper divisors (54682006).

71048138 is a wasteful number, since it uses less digits than its factorization.

71048138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10298 (or 10291 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 71048138 is about 8429.0057539428. The cubic root of 71048138 is about 414.1753362817.

The spelling of 71048138 in words is "seventy-one million, forty-eight thousand, one hundred thirty-eight".