19874284 has 12 divisors (see below), whose sum is σ = 34927200. Its totient is φ = 9895088.

The previous prime is 19874243. The next prime is 19874303. The reversal of 19874284 is 48247891.

It is a self number, because there is not a number n which added to its sum of digits gives 19874284.

It is an unprimeable number.

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, 9439 + ... + 11350.

It is an arithmetic number, because the mean of its divisors is an integer number (2910600).

Almost surely, 2^19874284 is an apocalyptic number.

It is an amenable number.

19874284 is a deficient number, since it is larger than the sum of its proper divisors (15052916).

19874284 is a wasteful number, since it uses less digits than its factorization.

19874284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21032 (or 21030 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 19874284 is about 4458.0583217360. The cubic root of 19874284 is about 270.8718229374.

The spelling of 19874284 in words is "nineteen million, eight hundred seventy-four thousand, two hundred eighty-four".