72271182 has 32 divisors (see below), whose sum is σ = 154053792. Its totient is φ = 22523904.

The previous prime is 72271181. The next prime is 72271187. The reversal of 72271182 is 28117227.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72271181) 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 15 ways as a sum of consecutive naturals, for example, 13758 + ... + 18270.

It is an arithmetic number, because the mean of its divisors is an integer number (4814181).

Almost surely, 2^72271182 is an apocalyptic number.

72271182 is an abundant number, since it is smaller than the sum of its proper divisors (81782610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72271182 is a wasteful number, since it uses less digits than its factorization.

72271182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4692.

The product of its digits is 3136, while the sum is 30.

The square root of 72271182 is about 8501.2459086889. The cubic root of 72271182 is about 416.5384077410.

The spelling of 72271182 in words is "seventy-two million, two hundred seventy-one thousand, one hundred eighty-two".