72272027226 has 64 divisors (see below), whose sum is σ = 169656975360. Its totient is φ = 20098113600.

The previous prime is 72272027203. The next prime is 72272027231. The reversal of 72272027226 is 62272027227.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105895 + ... + 394661.

It is an arithmetic number, because the mean of its divisors is an integer number (2650890240).

Almost surely, 2^72272027226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72272027226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84828487680).

72272027226 is an abundant number, since it is smaller than the sum of its proper divisors (97384948134).

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

72272027226 is a wasteful number, since it uses less digits than its factorization.

72272027226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288939.

The product of its (nonzero) digits is 131712, while the sum is 39.

Subtracting from 72272027226 its reverse (62272027227), we obtain a palindrome (9999999999).

The spelling of 72272027226 in words is "seventy-two billion, two hundred seventy-two million, twenty-seven thousand, two hundred twenty-six".