72266346 has 24 divisors (see below), whose sum is σ = 158017860. Its totient is φ = 23867136.

The previous prime is 72266339. The next prime is 72266419. The reversal of 72266346 is 64366227.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68310225 + 3956121 = 8265^2 + 1989^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72266346.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 16455 + ... + 20378.

Almost surely, 2^72266346 is an apocalyptic number.

72266346 is an abundant number, since it is smaller than the sum of its proper divisors (85751514).

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

72266346 is a wasteful number, since it uses less digits than its factorization.

72266346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36950 (or 36947 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 72266346 is about 8500.9614750333. The cubic root of 72266346 is about 416.5291166948.

The spelling of 72266346 in words is "seventy-two million, two hundred sixty-six thousand, three hundred forty-six".