19143992 has 32 divisors (see below), whose sum is σ = 41433600. Its totient is φ = 8122464.

The previous prime is 19143983. The next prime is 19144003. The reversal of 19143992 is 29934191.

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, 4109 + ... + 7427.

It is an arithmetic number, because the mean of its divisors is an integer number (1294800).

Almost surely, 2^19143992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19143992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20716800).

19143992 is an abundant number, since it is smaller than the sum of its proper divisors (22289608).

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

19143992 is a wasteful number, since it uses less digits than its factorization.

19143992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435 (or 3431 counting only the distinct ones).

The product of its digits is 17496, while the sum is 38.

The square root of 19143992 is about 4375.3847830791. The cubic root of 19143992 is about 267.5125542191.

The spelling of 19143992 in words is "nineteen million, one hundred forty-three thousand, nine hundred ninety-two".