19965412 has 24 divisors (see below), whose sum is σ = 37787904. Its totient is φ = 9194112.

The previous prime is 19965391. The next prime is 19965419. The reversal of 19965412 is 21456991.

It is not an unprimeable number, because it can be changed into a prime (19965419) 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 7 ways as a sum of consecutive naturals, for example, 73 + ... + 6319.

It is an arithmetic number, because the mean of its divisors is an integer number (1574496).

Almost surely, 2^19965412 is an apocalyptic number.

It is an amenable number.

19965412 is a deficient number, since it is larger than the sum of its proper divisors (17822492).

19965412 is a wasteful number, since it uses less digits than its factorization.

19965412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6315 (or 6313 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 19965412 is about 4468.2672256704. The cubic root of 19965412 is about 271.2851942413.

The spelling of 19965412 in words is "nineteen million, nine hundred sixty-five thousand, four hundred twelve".