12161984 has 14 divisors (see below), whose sum is σ = 24134064. Its totient is φ = 6080960.

The previous prime is 12161977. The next prime is 12161999. The reversal of 12161984 is 48916121.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 12161984.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94952 + ... + 95079.

Almost surely, 2^12161984 is an apocalyptic number.

It is an amenable number.

12161984 is a deficient number, since it is larger than the sum of its proper divisors (11972080).

12161984 is an equidigital number, since it uses as much as digits as its factorization.

12161984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190043 (or 190033 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 12161984 is about 3487.4036187399. The cubic root of 12161984 is about 229.9683888503.

The spelling of 12161984 in words is "twelve million, one hundred sixty-one thousand, nine hundred eighty-four".