72226169 has 8 divisors (see below), whose sum is σ = 74258688. Its totient is φ = 70214400.

The previous prime is 72226157. The next prime is 72226171. The reversal of 72226169 is 96162227.

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 72226169 - 2¹⁶ = 72160633 is a prime.

It is a super-2 number, since 2×72226169² = 10433238976833122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72226139) 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, 2009 + ... + 12185.

It is an arithmetic number, because the mean of its divisors is an integer number (9282336).

Almost surely, 2^72226169 is an apocalyptic number.

It is an amenable number.

72226169 is a deficient number, since it is larger than the sum of its proper divisors (2032519).

72226169 is a wasteful number, since it uses less digits than its factorization.

72226169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10375.

The product of its digits is 18144, while the sum is 35.

The square root of 72226169 is about 8498.5980608569. The cubic root of 72226169 is about 416.4519115894.

The spelling of 72226169 in words is "seventy-two million, two hundred twenty-six thousand, one hundred sixty-nine".