272816505 has 40 divisors (see below), whose sum is σ = 526678152. Its totient is φ = 134307072.

The previous prime is 272816483. The next prime is 272816507. The reversal of 272816505 is 505618272.

It is a happy number.

272816505 is a `hidden beast` number, since 2 + 72 + 81 + 6 + 505 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 962361 + 271854144 = 981^2 + 16488^2 .

It is not a de Polignac number, because 272816505 - 2⁸ = 272816249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 272816505.

It is not an unprimeable number, because it can be changed into a prime (272816507) 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 39 ways as a sum of consecutive naturals, for example, 20644 + ... + 31173.

Almost surely, 2^272816505 is an apocalyptic number.

It is an amenable number.

272816505 is a deficient number, since it is larger than the sum of its proper divisors (253861647).

272816505 is a wasteful number, since it uses less digits than its factorization.

272816505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51847 (or 51838 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 272816505 is about 16517.1578971686. The cubic root of 272816505 is about 648.5700359523.

The spelling of 272816505 in words is "two hundred seventy-two million, eight hundred sixteen thousand, five hundred five".