11819982 has 8 divisors (see below), whose sum is σ = 23639976. Its totient is φ = 3939992.

The previous prime is 11819921. The next prime is 11819987. The reversal of 11819982 is 28991811.

It is a sphenic number, since it is the product of 3 distinct primes.

11819982 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 11819982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11819987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 984993 + ... + 985004.

It is an arithmetic number, because the mean of its divisors is an integer number (2954997).

Almost surely, 2^11819982 is an apocalyptic number.

11819982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11819982 is a wasteful number, since it uses less digits than its factorization.

11819982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970002.

The product of its digits is 10368, while the sum is 39.

The square root of 11819982 is about 3438.0200697494. The cubic root of 11819982 is about 227.7922468875.

It can be divided in two parts, 118 and 19982, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 11819982 in words is "eleven million, eight hundred nineteen thousand, nine hundred eighty-two".