72240211 has 8 divisors (see below), whose sum is σ = 72854784. Its totient is φ = 71628480.

The previous prime is 72240187. The next prime is 72240241. The reversal of 72240211 is 11204227.

It is a happy number.

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 72240211 - 2¹⁹ = 71715923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72240241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116775 + ... + 117391.

It is an arithmetic number, because the mean of its divisors is an integer number (9106848).

Almost surely, 2^72240211 is an apocalyptic number.

72240211 is a deficient number, since it is larger than the sum of its proper divisors (614573).

72240211 is a wasteful number, since it uses less digits than its factorization.

72240211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 72240211 is about 8499.4241569650. The cubic root of 72240211 is about 416.4788982938.

Adding to 72240211 its reverse (11204227), we get a palindrome (83444438).

The spelling of 72240211 in words is "seventy-two million, two hundred forty thousand, two hundred eleven".