72969273 has 12 divisors (see below), whose sum is σ = 113507940. Its totient is φ = 44904096.

The previous prime is 72969233. The next prime is 72969283. The reversal of 72969273 is 37296927.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26347689 + 46621584 = 5133^2 + 6828^2 .

It is not a de Polignac number, because 72969273 - 2¹⁰ = 72968249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72969203) 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 11 ways as a sum of consecutive naturals, for example, 311718 + ... + 311951.

It is an arithmetic number, because the mean of its divisors is an integer number (9458995).

Almost surely, 2^72969273 is an apocalyptic number.

It is an amenable number.

72969273 is a deficient number, since it is larger than the sum of its proper divisors (40538667).

72969273 is a wasteful number, since it uses less digits than its factorization.

72969273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623688 (or 623685 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 72969273 is about 8542.2053943932. The cubic root of 72969273 is about 417.8752727990.

The spelling of 72969273 in words is "seventy-two million, nine hundred sixty-nine thousand, two hundred seventy-three".