19996315 has 16 divisors (see below), whose sum is σ = 25655616. Its totient is φ = 14924800.

The previous prime is 19996313. The next prime is 19996321. The reversal of 19996315 is 51369991.

It is not a de Polignac number, because 19996315 - 2¹ = 19996313 is a prime.

It is a super-2 number, since 2×19996315² = 799705227158450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19996313) 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 in 15 ways as a sum of consecutive naturals, for example, 2595 + ... + 6835.

It is an arithmetic number, because the mean of its divisors is an integer number (1603476).

Almost surely, 2^19996315 is an apocalyptic number.

19996315 is a deficient number, since it is larger than the sum of its proper divisors (5659301).

19996315 is a wasteful number, since it uses less digits than its factorization.

19996315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4310.

The product of its digits is 65610, while the sum is 43.

The square root of 19996315 is about 4471.7239404954. The cubic root of 19996315 is about 271.4250895873.

The spelling of 19996315 in words is "nineteen million, nine hundred ninety-six thousand, three hundred fifteen".