72773271 has 6 divisors (see below), whose sum is σ = 105116960. Its totient is φ = 48515508.

The previous prime is 72773263. The next prime is 72773279. The reversal of 72773271 is 17237727.

It is an interprime number because it is at equal distance from previous prime (72773263) and next prime (72773279).

It is not a de Polignac number, because 72773271 - 2³ = 72773263 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 (72773279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4042951 + ... + 4042968.

Almost surely, 2^72773271 is an apocalyptic number.

72773271 is a deficient number, since it is larger than the sum of its proper divisors (32343689).

72773271 is a wasteful number, since it uses less digits than its factorization.

72773271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8085925 (or 8085922 counting only the distinct ones).

The product of its digits is 28812, while the sum is 36.

The square root of 72773271 is about 8530.7251157214. The cubic root of 72773271 is about 417.5007871667.

The spelling of 72773271 in words is "seventy-two million, seven hundred seventy-three thousand, two hundred seventy-one".