272308261 has 4 divisors (see below), whose sum is σ = 288326412. Its totient is φ = 256290112.

The previous prime is 272308241. The next prime is 272308291. The reversal of 272308261 is 162803272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100200100 + 172108161 = 10010^2 + 13119^2 .

It is a cyclic number.

It is not a de Polignac number, because 272308261 - 2¹¹ = 272306213 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272308241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8009050 + ... + 8009083.

It is an arithmetic number, because the mean of its divisors is an integer number (72081603).

Almost surely, 2^272308261 is an apocalyptic number.

It is an amenable number.

272308261 is a deficient number, since it is larger than the sum of its proper divisors (16018151).

272308261 is a wasteful number, since it uses less digits than its factorization.

272308261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16018150.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 272308261 is about 16501.7653904060. The cubic root of 272308261 is about 648.1670340181.

The spelling of 272308261 in words is "two hundred seventy-two million, three hundred eight thousand, two hundred sixty-one".