291896 has 32 divisors (see below), whose sum is σ = 622080. Its totient is φ = 127200.

The previous prime is 291887. The next prime is 291899. The reversal of 291896 is 698192.

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 291896.

It is not an unprimeable number, because it can be changed into a prime (291899) by changing a digit.

291896 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2675 + ... + 2781.

It is an arithmetic number, because the mean of its divisors is an integer number (19440).

2²⁹¹⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 291896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311040).

291896 is an abundant number, since it is smaller than the sum of its proper divisors (330184).

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

291896 is a wasteful number, since it uses less digits than its factorization.

291896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 151 counting only the distinct ones).

The product of its digits is 7776, while the sum is 35.

The square root of 291896 is about 540.2740045569. The cubic root of 291896 is about 66.3349971104.

The spelling of 291896 in words is "two hundred ninety-one thousand, eight hundred ninety-six".