19243972 has 12 divisors (see below), whose sum is σ = 36738576. Its totient is φ = 8747240.

The previous prime is 19243967. The next prime is 19243993. The reversal of 19243972 is 27934291.

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218638 + ... + 218725.

It is an arithmetic number, because the mean of its divisors is an integer number (3061548).

Almost surely, 2^19243972 is an apocalyptic number.

It is an amenable number.

19243972 is a deficient number, since it is larger than the sum of its proper divisors (17494604).

19243972 is a wasteful number, since it uses less digits than its factorization.

19243972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437378 (or 437376 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 19243972 is about 4386.7951855540. The cubic root of 19243972 is about 267.9774429667.

The spelling of 19243972 in words is "nineteen million, two hundred forty-three thousand, nine hundred seventy-two".