72256211 has 4 divisors (see below), whose sum is σ = 73936632. Its totient is φ = 70575792.

The previous prime is 72256201. The next prime is 72256213. The reversal of 72256211 is 11265227.

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 72256211 - 2¹⁰ = 72255187 is a prime.

It is a super-4 number, since 4×72256211⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72256213) 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 3 ways as a sum of consecutive naturals, for example, 840146 + ... + 840231.

It is an arithmetic number, because the mean of its divisors is an integer number (18484158).

Almost surely, 2^72256211 is an apocalyptic number.

72256211 is a deficient number, since it is larger than the sum of its proper divisors (1680421).

72256211 is a wasteful number, since it uses less digits than its factorization.

72256211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680420.

The product of its digits is 1680, while the sum is 26.

The square root of 72256211 is about 8500.3653450896. The cubic root of 72256211 is about 416.5096437303.

The spelling of 72256211 in words is "seventy-two million, two hundred fifty-six thousand, two hundred eleven".