72112387 has 2 divisors, whose sum is σ = 72112388. Its totient is φ = 72112386.

The previous prime is 72112367. The next prime is 72112409. The reversal of 72112387 is 78321127.

It is a weak prime.

It is an emirp because it is prime and its reverse (78321127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72112387 - 2⁷ = 72112259 is a prime.

It is not a weakly prime, because it can be changed into another prime (72112367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36056193 + 36056194.

It is an arithmetic number, because the mean of its divisors is an integer number (36056194).

Almost surely, 2^72112387 is an apocalyptic number.

72112387 is a deficient number, since it is larger than the sum of its proper divisors (1).

72112387 is an equidigital number, since it uses as much as digits as its factorization.

72112387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 31.

The square root of 72112387 is about 8491.9012594354. The cubic root of 72112387 is about 416.2331098426.

The spelling of 72112387 in words is "seventy-two million, one hundred twelve thousand, three hundred eighty-seven".