19838136 has 64 divisors (see below), whose sum is σ = 51955200. Its totient is φ = 6306048.

The previous prime is 19838129. The next prime is 19838141. The reversal of 19838136 is 63183891.

It is a junction number, because it is equal to n+sod(n) for n = 19838094 and 19838103.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 48300 + ... + 48708.

It is an arithmetic number, because the mean of its divisors is an integer number (811800).

Almost surely, 2^19838136 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 19838136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25977600).

19838136 is an abundant number, since it is smaller than the sum of its proper divisors (32117064).

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

19838136 is a wasteful number, since it uses less digits than its factorization.

19838136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 504 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 19838136 is about 4454.0022451723. The cubic root of 19838136 is about 270.7074997512.

The spelling of 19838136 in words is "nineteen million, eight hundred thirty-eight thousand, one hundred thirty-six".