19669012 has 24 divisors (see below), whose sum is σ = 38469312. Its totient is φ = 8721600.

The previous prime is 19669003. The next prime is 19669019. The reversal of 19669012 is 21096691.

It is a super-2 number, since 2×19669012² = 773740066112288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19669019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3648 + ... + 7255.

It is an arithmetic number, because the mean of its divisors is an integer number (1602888).

Almost surely, 2^19669012 is an apocalyptic number.

It is an amenable number.

19669012 is a deficient number, since it is larger than the sum of its proper divisors (18800300).

19669012 is a wasteful number, since it uses less digits than its factorization.

19669012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10959 (or 10957 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 19669012 is about 4434.9759864062. The cubic root of 19669012 is about 269.9360250805.

The spelling of 19669012 in words is "nineteen million, six hundred sixty-nine thousand, twelve".