19919296 has 28 divisors (see below), whose sum is σ = 41610280. Its totient is φ = 9434880.

The previous prime is 19919293. The next prime is 19919309. The reversal of 19919296 is 69291991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19919293) 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 3 ways as a sum of consecutive naturals, for example, 6975 + ... + 9406.

Almost surely, 2^19919296 is an apocalyptic number.

19919296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19919296 is an abundant number, since it is smaller than the sum of its proper divisors (21690984).

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

19919296 is a wasteful number, since it uses less digits than its factorization.

19919296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16412 (or 16402 counting only the distinct ones).

The product of its digits is 78732, while the sum is 46.

The square root of 19919296 is about 4463.1038527016. The cubic root of 19919296 is about 271.0761621964.

The spelling of 19919296 in words is "nineteen million, nine hundred nineteen thousand, two hundred ninety-six".