19833940 has 24 divisors (see below), whose sum is σ = 47601792. Its totient is φ = 6800160.

The previous prime is 19833937. The next prime is 19833973. The reversal of 19833940 is 4933891.

It is a self number, because there is not a number n which added to its sum of digits gives 19833940.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70696 + ... + 70975.

It is an arithmetic number, because the mean of its divisors is an integer number (1983408).

Almost surely, 2^19833940 is an apocalyptic number.

19833940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19833940 is an abundant number, since it is smaller than the sum of its proper divisors (27767852).

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

19833940 is a wasteful number, since it uses less digits than its factorization.

19833940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141687 (or 141685 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 19833940 is about 4453.5311832298. The cubic root of 19833940 is about 270.6884124612.

The spelling of 19833940 in words is "nineteen million, eight hundred thirty-three thousand, nine hundred forty".