291672 has 24 divisors (see below), whose sum is σ = 790140. Its totient is φ = 97200.

The previous prime is 291661. The next prime is 291677. The reversal of 291672 is 276192.

291672 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a zygodrome in base 3.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 291672.

It is not an unprimeable number, because it can be changed into a prime (291677) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1954 + ... + 2097.

2²⁹¹⁶⁷² is an apocalyptic number.

It is an amenable number.

291672 is an abundant number, since it is smaller than the sum of its proper divisors (498468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

291672 is a wasteful number, since it uses less digits than its factorization.

291672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063 (or 4056 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 291672 is about 540.0666625519. The cubic root of 291672 is about 66.3180243508.

The spelling of 291672 in words is "two hundred ninety-one thousand, six hundred seventy-two".