72266227 has 4 divisors (see below), whose sum is σ = 78835896. Its totient is φ = 65696560.

The previous prime is 72266221. The next prime is 72266263.

72266227 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72266227 - 2³ = 72266219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72266192 and 72266201.

It is not an unprimeable number, because it can be changed into a prime (72266221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3284818 + ... + 3284839.

It is an arithmetic number, because the mean of its divisors is an integer number (19708974).

Almost surely, 2^72266227 is an apocalyptic number.

72266227 is a deficient number, since it is larger than the sum of its proper divisors (6569669).

72266227 is a wasteful number, since it uses less digits than its factorization.

72266227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6569668.

The product of its digits is 28224, while the sum is 34.

The square root of 72266227 is about 8500.9544758221. The cubic root of 72266227 is about 416.5288880637.

The spelling of 72266227 in words is "seventy-two million, two hundred sixty-six thousand, two hundred twenty-seven".