72226170 has 96 divisors (see below), whose sum is σ = 194088960. Its totient is φ = 18627840.

The previous prime is 72226157. The next prime is 72226171. The reversal of 72226170 is 7162227.

It is not an unprimeable number, because it can be changed into a prime (72226171) 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 47 ways as a sum of consecutive naturals, for example, 568647 + ... + 568773.

It is an arithmetic number, because the mean of its divisors is an integer number (2021760).

Almost surely, 2^72226170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72226170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97044480).

72226170 is an abundant number, since it is smaller than the sum of its proper divisors (121862790).

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

72226170 is a wasteful number, since it uses less digits than its factorization.

72226170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 72226170 is about 8498.5981196901. The cubic root of 72226170 is about 416.4519135114.

Adding to 72226170 its reverse (7162227), we get a palindrome (79388397).

The spelling of 72226170 in words is "seventy-two million, two hundred twenty-six thousand, one hundred seventy".