72266 has 8 divisors (see below), whose sum is σ = 113184. Its totient is φ = 34540.

The previous prime is 72253. The next prime is 72269. The reversal of 72266 is 66227.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (72269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 740 + ... + 831.

It is an arithmetic number, because the mean of its divisors is an integer number (14148).

2⁷²²⁶⁶ is an apocalyptic number.

72266 is a deficient number, since it is larger than the sum of its proper divisors (40918).

72266 is a wasteful number, since it uses less digits than its factorization.

72266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596.

The product of its digits is 1008, while the sum is 23.

The square root of 72266 is about 268.8233620800. The cubic root of 72266 is about 41.6528451935.

The spelling of 72266 in words is "seventy-two thousand, two hundred sixty-six".