19872112 has 20 divisors (see below), whose sum is σ = 41464360. Its totient is φ = 9171648.

The previous prime is 19872101. The next prime is 19872113. The reversal of 19872112 is 21127891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19872113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47562 + ... + 47977.

It is an arithmetic number, because the mean of its divisors is an integer number (2073218).

Almost surely, 2^19872112 is an apocalyptic number.

It is an amenable number.

19872112 is an abundant number, since it is smaller than the sum of its proper divisors (21592248).

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

19872112 is a wasteful number, since it uses less digits than its factorization.

19872112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95560 (or 95554 counting only the distinct ones).

The product of its digits is 2016, while the sum is 31.

The square root of 19872112 is about 4457.8147112683. The cubic root of 19872112 is about 270.8619549923.

The spelling of 19872112 in words is "nineteen million, eight hundred seventy-two thousand, one hundred twelve".