19794872 has 16 divisors (see below), whose sum is σ = 37586400. Its totient is φ = 9771840.

The previous prime is 19794823. The next prime is 19794937. The reversal of 19794872 is 27849791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15029 + ... + 16292.

It is an arithmetic number, because the mean of its divisors is an integer number (2349150).

Almost surely, 2^19794872 is an apocalyptic number.

It is an amenable number.

19794872 is a deficient number, since it is larger than the sum of its proper divisors (17791528).

19794872 is a wasteful number, since it uses less digits than its factorization.

19794872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31406 (or 31402 counting only the distinct ones).

The product of its digits is 254016, while the sum is 47.

The square root of 19794872 is about 4449.1428387949. The cubic root of 19794872 is about 270.5105656985.

The spelling of 19794872 in words is "nineteen million, seven hundred ninety-four thousand, eight hundred seventy-two".