72238117 has 8 divisors (see below), whose sum is σ = 87414336. Its totient is φ = 58276032.

The previous prime is 72238109. The next prime is 72238121. The reversal of 72238117 is 71183227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72238117 - 2³ = 72238109 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 (72239117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303403 + ... + 303640.

It is an arithmetic number, because the mean of its divisors is an integer number (10926792).

Almost surely, 2^72238117 is an apocalyptic number.

It is an amenable number.

72238117 is a deficient number, since it is larger than the sum of its proper divisors (15176219).

72238117 is a wasteful number, since it uses less digits than its factorization.

72238117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607067.

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

The square root of 72238117 is about 8499.3009712564. The cubic root of 72238117 is about 416.4748741488.

The spelling of 72238117 in words is "seventy-two million, two hundred thirty-eight thousand, one hundred seventeen".