72845279 has 8 divisors (see below), whose sum is σ = 79183440. Its totient is φ = 66612096.

The previous prime is 72845273. The next prime is 72845291. The reversal of 72845279 is 97254827.

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 72845279 - 2⁴ = 72845263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72845273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24794 + ... + 27575.

It is an arithmetic number, because the mean of its divisors is an integer number (9897930).

Almost surely, 2^72845279 is an apocalyptic number.

72845279 is a deficient number, since it is larger than the sum of its proper divisors (6338161).

72845279 is a wasteful number, since it uses less digits than its factorization.

72845279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52489.

The product of its digits is 282240, while the sum is 44.

The square root of 72845279 is about 8534.9445809566. The cubic root of 72845279 is about 417.6384452471.

The spelling of 72845279 in words is "seventy-two million, eight hundred forty-five thousand, two hundred seventy-nine".