91208 has 16 divisors (see below), whose sum is σ = 184380. Its totient is φ = 42048.

The previous prime is 91199. The next prime is 91229. The reversal of 91208 is 80219.

91208 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in 2 ways, for example, as 91204 + 4 = 302^2 + 2^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335 + ... + 542.

2⁹¹²⁰⁸ is an apocalyptic number.

It is an amenable number.

91208 is an abundant number, since it is smaller than the sum of its proper divisors (93172).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92190).

91208 is a wasteful number, since it uses less digits than its factorization.

91208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 91208 is about 302.0066224439. The cubic root of 91208 is about 45.0136584054.

The spelling of 91208 in words is "ninety-one thousand, two hundred eight".