19873140 has 48 divisors (see below), whose sum is σ = 63595392. Its totient is φ = 4542336.

The previous prime is 19873121. The next prime is 19873141. The reversal of 19873140 is 4137891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19873141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23239 + ... + 24078.

It is an arithmetic number, because the mean of its divisors is an integer number (1324904).

Almost surely, 2^19873140 is an apocalyptic number.

19873140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19873140 is an abundant number, since it is smaller than the sum of its proper divisors (43722252).

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

19873140 is a wasteful number, since it uses less digits than its factorization.

19873140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47336 (or 47334 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 19873140 is about 4457.9300129096. The cubic root of 19873140 is about 270.8666255458.

The spelling of 19873140 in words is "nineteen million, eight hundred seventy-three thousand, one hundred forty".