19968237 has 12 divisors (see below), whose sum is σ = 28934464. Its totient is φ = 13269960.

The previous prime is 19968229. The next prime is 19968241. The reversal of 19968237 is 73286991.

It is not a de Polignac number, because 19968237 - 2³ = 19968229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19968192 and 19968201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19968287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 373 + ... + 6330.

Almost surely, 2^19968237 is an apocalyptic number.

It is an amenable number.

19968237 is a deficient number, since it is larger than the sum of its proper divisors (8966227).

19968237 is a wasteful number, since it uses less digits than its factorization.

19968237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7040 (or 7037 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 19968237 is about 4468.5833325563. The cubic root of 19968237 is about 271.2979887770.

It can be divided in two parts, 19 and 968237, that added together give a square (968256 = 984²).

The spelling of 19968237 in words is "nineteen million, nine hundred sixty-eight thousand, two hundred thirty-seven".