11891882 has 4 divisors (see below), whose sum is σ = 17837826. Its totient is φ = 5945940.

The previous prime is 11891833. The next prime is 11891917. The reversal of 11891882 is 28819811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28819811 = 17 ⋅1695283.

It can be written as a sum of positive squares in only one way, i.e., 9066121 + 2825761 = 3011^2 + 1681^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2972969 + ... + 2972972.

Almost surely, 2^11891882 is an apocalyptic number.

11891882 is a deficient number, since it is larger than the sum of its proper divisors (5945944).

11891882 is an equidigital number, since it uses as much as digits as its factorization.

11891882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5945943.

The product of its digits is 9216, while the sum is 38.

The square root of 11891882 is about 3448.4608160743. The cubic root of 11891882 is about 228.2531941520.

The spelling of 11891882 in words is "eleven million, eight hundred ninety-one thousand, eight hundred eighty-two".