19973272 has 32 divisors (see below), whose sum is σ = 41057280. Its totient is φ = 9033760.

The previous prime is 19973267. The next prime is 19973281. The reversal of 19973272 is 27237991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22713 + ... + 23575.

It is an arithmetic number, because the mean of its divisors is an integer number (1283040).

Almost surely, 2^19973272 is an apocalyptic number.

It is an amenable number.

19973272 is an abundant number, since it is smaller than the sum of its proper divisors (21084008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19973272 is a wasteful number, since it uses less digits than its factorization.

19973272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1139 counting only the distinct ones).

The product of its digits is 47628, while the sum is 40.

The square root of 19973272 is about 4469.1466747020. The cubic root of 19973272 is about 271.3207894976.

The spelling of 19973272 in words is "nineteen million, nine hundred seventy-three thousand, two hundred seventy-two".