12019724 has 12 divisors (see below), whose sum is σ = 21547848. Its totient is φ = 5863200.

The previous prime is 12019703. The next prime is 12019729. The reversal of 12019724 is 42791021.

It is a junction number, because it is equal to n+sod(n) for n = 12019693 and 12019702.

It is not an unprimeable number, because it can be changed into a prime (12019729) 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, 36482 + ... + 36809.

It is an arithmetic number, because the mean of its divisors is an integer number (1795654).

Almost surely, 2^12019724 is an apocalyptic number.

It is an amenable number.

12019724 is a deficient number, since it is larger than the sum of its proper divisors (9528124).

12019724 is a wasteful number, since it uses less digits than its factorization.

12019724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73336 (or 73334 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 12019724 is about 3466.9473604311. The cubic root of 12019724 is about 229.0682150917.

The spelling of 12019724 in words is "twelve million, nineteen thousand, seven hundred twenty-four".