71938361 has 16 divisors (see below), whose sum is σ = 80431488. Its totient is φ = 63792000.

The previous prime is 71938333. The next prime is 71938381. The reversal of 71938361 is 16383917.

It is a cyclic number.

It is not a de Polignac number, because 71938361 - 2⁶ = 71938297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71938381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80660 + ... + 81546.

It is an arithmetic number, because the mean of its divisors is an integer number (5026968).

Almost surely, 2^71938361 is an apocalyptic number.

It is an amenable number.

71938361 is a deficient number, since it is larger than the sum of its proper divisors (8493127).

71938361 is a wasteful number, since it uses less digits than its factorization.

71938361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072.

The product of its digits is 27216, while the sum is 38.

The square root of 71938361 is about 8481.6484836381. The cubic root of 71938361 is about 415.8980137843.

The spelling of 71938361 in words is "seventy-one million, nine hundred thirty-eight thousand, three hundred sixty-one".