72235189 has 8 divisors (see below), whose sum is σ = 77880600. Its totient is φ = 66602496.

The previous prime is 72235183. The next prime is 72235213. The reversal of 72235189 is 98153227.

It can be written as a sum of positive squares in 4 ways, for example, as 23444964 + 48790225 = 4842^2 + 6985^2 .

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 72235189 - 2⁷ = 72235061 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 (72235183) 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 7 ways as a sum of consecutive naturals, for example, 10989 + ... + 16285.

It is an arithmetic number, because the mean of its divisors is an integer number (9735075).

Almost surely, 2^72235189 is an apocalyptic number.

It is an amenable number.

72235189 is a deficient number, since it is larger than the sum of its proper divisors (5645411).

72235189 is a wasteful number, since it uses less digits than its factorization.

72235189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6359.

The product of its digits is 30240, while the sum is 37.

The square root of 72235189 is about 8499.1287200513. The cubic root of 72235189 is about 416.4692471338.

The spelling of 72235189 in words is "seventy-two million, two hundred thirty-five thousand, one hundred eighty-nine".