19996395 has 16 divisors (see below), whose sum is σ = 33027072. Its totient is φ = 10320480.

The previous prime is 19996393. The next prime is 19996409. The reversal of 19996395 is 59369991.

It is not a de Polignac number, because 19996395 - 2¹ = 19996393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19996393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21037 + ... + 21966.

It is an arithmetic number, because the mean of its divisors is an integer number (2064192).

Almost surely, 2^19996395 is an apocalyptic number.

19996395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19996395 is a deficient number, since it is larger than the sum of its proper divisors (13030677).

19996395 is a wasteful number, since it uses less digits than its factorization.

19996395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43042.

The product of its digits is 590490, while the sum is 51.

The square root of 19996395 is about 4471.7328855825. The cubic root of 19996395 is about 271.4254515536.

The spelling of 19996395 in words is "nineteen million, nine hundred ninety-six thousand, three hundred ninety-five".