291272 has 16 divisors (see below), whose sum is σ = 570240. Its totient is φ = 139216.

The previous prime is 291271. The next prime is 291287. The reversal of 291272 is 272192.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (291271) 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, 608 + ... + 975.

It is an arithmetic number, because the mean of its divisors is an integer number (35640).

2²⁹¹²⁷² is an apocalyptic number.

It is an amenable number.

291272 is a deficient number, since it is larger than the sum of its proper divisors (278968).

291272 is a wasteful number, since it uses less digits than its factorization.

291272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612 (or 1608 counting only the distinct ones).

The product of its digits is 504, while the sum is 23.

The square root of 291272 is about 539.6962108446. The cubic root of 291272 is about 66.2876942249.

The spelling of 291272 in words is "two hundred ninety-one thousand, two hundred seventy-two".