72112671 has 6 divisors (see below), whose sum is σ = 104162760. Its totient is φ = 48075108.

The previous prime is 72112661. The next prime is 72112673. The reversal of 72112671 is 17621127.

It is not a de Polignac number, because 72112671 - 2⁵ = 72112639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72112673) 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 5 ways as a sum of consecutive naturals, for example, 4006251 + ... + 4006268.

It is an arithmetic number, because the mean of its divisors is an integer number (17360460).

Almost surely, 2^72112671 is an apocalyptic number.

72112671 is a deficient number, since it is larger than the sum of its proper divisors (32050089).

72112671 is a wasteful number, since it uses less digits than its factorization.

72112671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8012525 (or 8012522 counting only the distinct ones).

The product of its digits is 1176, while the sum is 27.

The square root of 72112671 is about 8491.9179812337. The cubic root of 72112671 is about 416.2336562584.

Adding to 72112671 its reverse (17621127), we get a palindrome (89733798).

The spelling of 72112671 in words is "seventy-two million, one hundred twelve thousand, six hundred seventy-one".