19688924 has 12 divisors (see below), whose sum is σ = 36482544. Its totient is φ = 9265344.

The previous prime is 19688891. The next prime is 19688927. The reversal of 19688924 is 42988691.

It is a super-3 number, since 3×19688924³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19688927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144704 + ... + 144839.

It is an arithmetic number, because the mean of its divisors is an integer number (3040212).

Almost surely, 2^19688924 is an apocalyptic number.

It is an amenable number.

19688924 is a deficient number, since it is larger than the sum of its proper divisors (16793620).

19688924 is a wasteful number, since it uses less digits than its factorization.

19688924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289564 (or 289562 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 19688924 is about 4437.2203010443. The cubic root of 19688924 is about 270.0270846172.

The spelling of 19688924 in words is "nineteen million, six hundred eighty-eight thousand, nine hundred twenty-four".