19996346 has 4 divisors (see below), whose sum is σ = 29994522. Its totient is φ = 9998172.

The previous prime is 19996343. The next prime is 19996357. The reversal of 19996346 is 64369991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13801225 + 6195121 = 3715^2 + 2489^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19996346.

It is not an unprimeable number, because it can be changed into a prime (19996343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999085 + ... + 4999088.

Almost surely, 2^19996346 is an apocalyptic number.

19996346 is a deficient number, since it is larger than the sum of its proper divisors (9998176).

19996346 is an equidigital number, since it uses as much as digits as its factorization.

19996346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9998175.

The product of its digits is 314928, while the sum is 47.

The square root of 19996346 is about 4471.7274067188. The cubic root of 19996346 is about 271.4252298494.

The spelling of 19996346 in words is "nineteen million, nine hundred ninety-six thousand, three hundred forty-six".