72938111 has 4 divisors (see below), whose sum is σ = 73646352. Its totient is φ = 72229872.

The previous prime is 72938069. The next prime is 72938119. The reversal of 72938111 is 11183927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11183927 = 359 ⋅31153.

It is a cyclic number.

It is not a de Polignac number, because 72938111 - 2¹⁰ = 72937087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72938119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353966 + ... + 354171.

It is an arithmetic number, because the mean of its divisors is an integer number (18411588).

Almost surely, 2^72938111 is an apocalyptic number.

72938111 is a deficient number, since it is larger than the sum of its proper divisors (708241).

72938111 is a wasteful number, since it uses less digits than its factorization.

72938111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708240.

The product of its digits is 3024, while the sum is 32.

The square root of 72938111 is about 8540.3811975813. The cubic root of 72938111 is about 417.8157788831.

The spelling of 72938111 in words is "seventy-two million, nine hundred thirty-eight thousand, one hundred eleven".