19893472 has 12 divisors (see below), whose sum is σ = 39165336. Its totient is φ = 9946720.

The previous prime is 19893427. The next prime is 19893479. The reversal of 19893472 is 27439891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19893479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310804 + ... + 310867.

It is an arithmetic number, because the mean of its divisors is an integer number (3263778).

Almost surely, 2^19893472 is an apocalyptic number.

It is an amenable number.

19893472 is a deficient number, since it is larger than the sum of its proper divisors (19271864).

19893472 is an equidigital number, since it uses as much as digits as its factorization.

19893472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621681 (or 621673 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 19893472 is about 4460.2098605335. The cubic root of 19893472 is about 270.9589676578.

The spelling of 19893472 in words is "nineteen million, eight hundred ninety-three thousand, four hundred seventy-two".