72272371 has 8 divisors (see below), whose sum is σ = 79384320. Its totient is φ = 65491272.

The previous prime is 72272351. The next prime is 72272393. The reversal of 72272371 is 17327227.

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 72272371 - 2⁵ = 72272339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72272311) 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, 82255 + ... + 83128.

It is an arithmetic number, because the mean of its divisors is an integer number (9923040).

Almost surely, 2^72272371 is an apocalyptic number.

72272371 is a deficient number, since it is larger than the sum of its proper divisors (7111949).

72272371 is a wasteful number, since it uses less digits than its factorization.

72272371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165425.

The product of its digits is 8232, while the sum is 31.

The square root of 72272371 is about 8501.3158393275. The cubic root of 72272371 is about 416.5406920145.

Adding to 72272371 its reverse (17327227), we get a palindrome (89599598).

The spelling of 72272371 in words is "seventy-two million, two hundred seventy-two thousand, three hundred seventy-one".