72226365 has 16 divisors (see below), whose sum is σ = 115986048. Its totient is φ = 38379456.

The previous prime is 72226309. The next prime is 72226367. The reversal of 72226365 is 56362227.

It is a happy number.

It is not a de Polignac number, because 72226365 - 2⁷ = 72226237 is a prime.

It is a super-2 number, since 2×72226365² = 10433295602226450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72226367) 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 15 ways as a sum of consecutive naturals, for example, 4537 + ... + 12846.

It is an arithmetic number, because the mean of its divisors is an integer number (7249128).

Almost surely, 2^72226365 is an apocalyptic number.

It is an amenable number.

72226365 is a deficient number, since it is larger than the sum of its proper divisors (43759683).

72226365 is a wasteful number, since it uses less digits than its factorization.

72226365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17668.

The product of its digits is 30240, while the sum is 33.

The square root of 72226365 is about 8498.6095921627. The cubic root of 72226365 is about 416.4522882973.

The spelling of 72226365 in words is "seventy-two million, two hundred twenty-six thousand, three hundred sixty-five".