72112307 has 4 divisors (see below), whose sum is σ = 72130080. Its totient is φ = 72094536.

The previous prime is 72112303. The next prime is 72112319. The reversal of 72112307 is 70321127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70321127 = 37 ⋅1900571.

It is a cyclic number.

It is not a de Polignac number, because 72112307 - 2² = 72112303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72112303) 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, 518 + ... + 12020.

It is an arithmetic number, because the mean of its divisors is an integer number (18032520).

Almost surely, 2^72112307 is an apocalyptic number.

72112307 is a deficient number, since it is larger than the sum of its proper divisors (17773).

72112307 is a wasteful number, since it uses less digits than its factorization.

72112307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17772.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 72112307 is about 8491.8965490637. The cubic root of 72112307 is about 416.2329559224.

The spelling of 72112307 in words is "seventy-two million, one hundred twelve thousand, three hundred seven".