72256180 has 12 divisors (see below), whose sum is σ = 151738020. Its totient is φ = 28902464.

The previous prime is 72256127. The next prime is 72256181. The reversal of 72256180 is 8165227.

It can be written as a sum of positive squares in 2 ways, for example, as 56160036 + 16096144 = 7494^2 + 4012^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72256181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1806385 + ... + 1806424.

It is an arithmetic number, because the mean of its divisors is an integer number (12644835).

Almost surely, 2^72256180 is an apocalyptic number.

It is an amenable number.

72256180 is an abundant number, since it is smaller than the sum of its proper divisors (79481840).

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

72256180 is a wasteful number, since it uses less digits than its factorization.

72256180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612818 (or 3612816 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 72256180 is about 8500.3635216384. The cubic root of 72256180 is about 416.5095841654.

The spelling of 72256180 in words is "seventy-two million, two hundred fifty-six thousand, one hundred eighty".