19836140 has 24 divisors (see below), whose sum is σ = 41783280. Its totient is φ = 7910208.

The previous prime is 19836139. The next prime is 19836149. The reversal of 19836140 is 4163891.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19836097 and 19836106.

It is not an unprimeable number, because it can be changed into a prime (19836149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6131 + ... + 8789.

It is an arithmetic number, because the mean of its divisors is an integer number (1740970).

Almost surely, 2^19836140 is an apocalyptic number.

19836140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19836140 is an abundant number, since it is smaller than the sum of its proper divisors (21947140).

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

19836140 is a wasteful number, since it uses less digits than its factorization.

19836140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041 (or 3039 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 19836140 is about 4453.7781713956. The cubic root of 19836140 is about 270.6984204322.

The spelling of 19836140 in words is "nineteen million, eight hundred thirty-six thousand, one hundred forty".