272272721 has 16 divisors (see below), whose sum is σ = 321884160. Its totient is φ = 225372240.

The previous prime is 272272711. The next prime is 272272727. The reversal of 272272721 is 127272272.

It is a cyclic number.

It is not a de Polignac number, because 272272721 - 2¹⁸ = 272010577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (272272727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133310 + ... + 135336.

It is an arithmetic number, because the mean of its divisors is an integer number (20117760).

Almost surely, 2^272272721 is an apocalyptic number.

It is an amenable number.

272272721 is a deficient number, since it is larger than the sum of its proper divisors (49611439).

272272721 is a wasteful number, since it uses less digits than its factorization.

272272721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684.

The product of its digits is 10976, while the sum is 32.

The square root of 272272721 is about 16500.6885007869. The cubic root of 272272721 is about 648.1388345326.

The spelling of 272272721 in words is "two hundred seventy-two million, two hundred seventy-two thousand, seven hundred twenty-one".