71372938 has 16 divisors (see below), whose sum is σ = 131765760. Its totient is φ = 28235376.

The previous prime is 71372929. The next prime is 71372969. The reversal of 71372938 is 83927317.

It is a self number, because there is not a number n which added to its sum of digits gives 71372938.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195898 + ... + 196261.

It is an arithmetic number, because the mean of its divisors is an integer number (8235360).

Almost surely, 2^71372938 is an apocalyptic number.

71372938 is a deficient number, since it is larger than the sum of its proper divisors (60392822).

71372938 is a wasteful number, since it uses less digits than its factorization.

71372938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392181.

The product of its digits is 63504, while the sum is 40.

The square root of 71372938 is about 8448.2505881395. The cubic root of 71372938 is about 414.8055178155.

The spelling of 71372938 in words is "seventy-one million, three hundred seventy-two thousand, nine hundred thirty-eight".