72208427 has 2 divisors, whose sum is σ = 72208428. Its totient is φ = 72208426.

The previous prime is 72208397. The next prime is 72208439. The reversal of 72208427 is 72480227.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (72480227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72208427 - 2⁶ = 72208363 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72208393 and 72208402.

It is not a weakly prime, because it can be changed into another prime (72208457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36104213 + 36104214.

It is an arithmetic number, because the mean of its divisors is an integer number (36104214).

Almost surely, 2^72208427 is an apocalyptic number.

72208427 is a deficient number, since it is larger than the sum of its proper divisors (1).

72208427 is an equidigital number, since it uses as much as digits as its factorization.

72208427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 72208427 is about 8497.5541775266. The cubic root of 72208427 is about 416.4178090151.

The spelling of 72208427 in words is "seventy-two million, two hundred eight thousand, four hundred twenty-seven".