72737449 has 8 divisors (see below), whose sum is σ = 75246080. Its totient is φ = 70257456.

The previous prime is 72737447. The next prime is 72737507. The reversal of 72737449 is 94473727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72737449 - 2¹ = 72737447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72737443) 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 7 ways as a sum of consecutive naturals, for example, 1929 + ... + 12214.

It is an arithmetic number, because the mean of its divisors is an integer number (9405760).

Almost surely, 2^72737449 is an apocalyptic number.

It is an amenable number.

72737449 is a deficient number, since it is larger than the sum of its proper divisors (2508631).

72737449 is a wasteful number, since it uses less digits than its factorization.

72737449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14319.

The product of its digits is 296352, while the sum is 43.

The square root of 72737449 is about 8528.6252702297. The cubic root of 72737449 is about 417.4322722316.

The spelling of 72737449 in words is "seventy-two million, seven hundred thirty-seven thousand, four hundred forty-nine".