19668246 has 16 divisors (see below), whose sum is σ = 42362544. Its totient is φ = 6051744.

The previous prime is 19668241. The next prime is 19668263. The reversal of 19668246 is 64286691.

It is a junction number, because it is equal to n+sod(n) for n = 19668198 and 19668207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19668241) 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, 126001 + ... + 126156.

It is an arithmetic number, because the mean of its divisors is an integer number (2647659).

Almost surely, 2^19668246 is an apocalyptic number.

19668246 is an abundant number, since it is smaller than the sum of its proper divisors (22694298).

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

19668246 is a wasteful number, since it uses less digits than its factorization.

19668246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252175.

The product of its digits is 124416, while the sum is 42.

The square root of 19668246 is about 4434.8896265860. The cubic root of 19668246 is about 269.9325208597.

The spelling of 19668246 in words is "nineteen million, six hundred sixty-eight thousand, two hundred forty-six".