272864321 has 4 divisors (see below), whose sum is σ = 277489200. Its totient is φ = 268239444.

The previous prime is 272864309. The next prime is 272864351. The reversal of 272864321 is 123468272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-272864321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (272864351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312351 + ... + 2312468.

It is an arithmetic number, because the mean of its divisors is an integer number (69372300).

Almost surely, 2^272864321 is an apocalyptic number.

It is an amenable number.

272864321 is a deficient number, since it is larger than the sum of its proper divisors (4624879).

272864321 is an equidigital number, since it uses as much as digits as its factorization.

272864321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4624878.

The product of its digits is 32256, while the sum is 35.

The square root of 272864321 is about 16518.6052982690. The cubic root of 272864321 is about 648.6079249273.

The spelling of 272864321 in words is "two hundred seventy-two million, eight hundred sixty-four thousand, three hundred twenty-one".