19782842 has 8 divisors (see below), whose sum is σ = 29716032. Its totient is φ = 9877500.

The previous prime is 19782811. The next prime is 19782853. The reversal of 19782842 is 24828791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19782842.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5084 + ... + 8087.

It is an arithmetic number, because the mean of its divisors is an integer number (3714504).

Almost surely, 2^19782842 is an apocalyptic number.

19782842 is a deficient number, since it is larger than the sum of its proper divisors (9933190).

19782842 is a wasteful number, since it uses less digits than its factorization.

19782842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13924.

The product of its digits is 64512, while the sum is 41.

The square root of 19782842 is about 4447.7906875212. The cubic root of 19782842 is about 270.4557551805.

The spelling of 19782842 in words is "nineteen million, seven hundred eighty-two thousand, eight hundred forty-two".