72240199 has 8 divisors (see below), whose sum is σ = 74854400. Its totient is φ = 69643800.

The previous prime is 72240187. The next prime is 72240241. The reversal of 72240199 is 99104227.

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 72240199 - 2⁵ = 72240167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72240139) 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, 4102 + ... + 12700.

It is an arithmetic number, because the mean of its divisors is an integer number (9356800).

Almost surely, 2^72240199 is an apocalyptic number.

72240199 is a deficient number, since it is larger than the sum of its proper divisors (2614201).

72240199 is a wasteful number, since it uses less digits than its factorization.

72240199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8901.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 72240199 is about 8499.4234510348. The cubic root of 72240199 is about 416.4788752330.

It can be divided in two parts, 722401 and 99, that added together give a square (722500 = 850²).

The spelling of 72240199 in words is "seventy-two million, two hundred forty thousand, one hundred ninety-nine".