12019872 has 24 divisors (see below), whose sum is σ = 31552416. Its totient is φ = 4006592.

The previous prime is 12019871. The next prime is 12019873. The reversal of 12019872 is 27891021.

It is an interprime number because it is at equal distance from previous prime (12019871) and next prime (12019873).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12019871) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 62508 + ... + 62699.

It is an arithmetic number, because the mean of its divisors is an integer number (1314684).

Almost surely, 2^12019872 is an apocalyptic number.

12019872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12019872 is an abundant number, since it is smaller than the sum of its proper divisors (19532544).

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

12019872 is a wasteful number, since it uses less digits than its factorization.

12019872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125220 (or 125212 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12019872 is about 3466.9687047910. The cubic root of 12019872 is about 229.0691552674.

The spelling of 12019872 in words is "twelve million, nineteen thousand, eight hundred seventy-two".