19966002 has 16 divisors (see below), whose sum is σ = 45636672. Its totient is φ = 5704560.

The previous prime is 19965997. The next prime is 19966021. The reversal of 19966002 is 20066991.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237649 + ... + 237732.

It is an arithmetic number, because the mean of its divisors is an integer number (2852292).

Almost surely, 2^19966002 is an apocalyptic number.

19966002 is an abundant number, since it is smaller than the sum of its proper divisors (25670670).

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

19966002 is a wasteful number, since it uses less digits than its factorization.

19966002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475393.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 19966002 is about 4468.3332463011. Note that the first 3 decimals coincide. The cubic root of 19966002 is about 271.2878664742.

The spelling of 19966002 in words is "nineteen million, nine hundred sixty-six thousand, two".