19973896 has 8 divisors (see below), whose sum is σ = 37451070. Its totient is φ = 9986944.

The previous prime is 19973881. The next prime is 19973903. The reversal of 19973896 is 69837991.

It can be written as a sum of positive squares in only one way, i.e., 19802500 + 171396 = 4450^2 + 414^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248361 + ... + 1248376.

Almost surely, 2^19973896 is an apocalyptic number.

It is an amenable number.

19973896 is a deficient number, since it is larger than the sum of its proper divisors (17477174).

19973896 is a wasteful number, since it uses less digits than its factorization.

19973896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496743 (or 2496739 counting only the distinct ones).

The product of its digits is 734832, while the sum is 52.

The square root of 19973896 is about 4469.2164861416. The cubic root of 19973896 is about 271.3236149805.

The spelling of 19973896 in words is "nineteen million, nine hundred seventy-three thousand, eight hundred ninety-six".