11881842 has 32 divisors (see below), whose sum is σ = 27437184. Its totient is φ = 3360000.

The previous prime is 11881829. The next prime is 11881843. The reversal of 11881842 is 24818811.

It is not an unprimeable number, because it can be changed into a prime (11881843) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 2842 + ... + 5642.

It is an arithmetic number, because the mean of its divisors is an integer number (857412).

Almost surely, 2^11881842 is an apocalyptic number.

11881842 is an abundant number, since it is smaller than the sum of its proper divisors (15555342).

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

11881842 is a wasteful number, since it uses less digits than its factorization.

11881842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914.

The product of its digits is 4096, while the sum is 33.

The square root of 11881842 is about 3447.0047867678. The cubic root of 11881842 is about 228.1889400302.

Subtracting from 11881842 its sum of digits (33), we obtain a square (11881809 = 3447²).

The spelling of 11881842 in words is "eleven million, eight hundred eighty-one thousand, eight hundred forty-two".