19971296 has 24 divisors (see below), whose sum is σ = 39423384. Its totient is φ = 9959040.

The previous prime is 19971253. The next prime is 19971313. The reversal of 19971296 is 69217991.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17726 + ... + 18818.

It is an arithmetic number, because the mean of its divisors is an integer number (1642641).

Almost surely, 2^19971296 is an apocalyptic number.

19971296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19971296 is a deficient number, since it is larger than the sum of its proper divisors (19452088).

19971296 is a wasteful number, since it uses less digits than its factorization.

19971296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674 (or 1666 counting only the distinct ones).

The product of its digits is 61236, while the sum is 44.

The square root of 19971296 is about 4468.9255979486. The cubic root of 19971296 is about 271.3118417472.

The spelling of 19971296 in words is "nineteen million, nine hundred seventy-one thousand, two hundred ninety-six".