19794984 has 64 divisors (see below), whose sum is σ = 54613440. Its totient is φ = 5928960.

The previous prime is 19794977. The next prime is 19794991. The reversal of 19794984 is 48949791.

It is an interprime number because it is at equal distance from previous prime (19794977) and next prime (19794991).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25222 + ... + 25994.

It is an arithmetic number, because the mean of its divisors is an integer number (853335).

Almost surely, 2^19794984 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 19794984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27306720).

19794984 is an abundant number, since it is smaller than the sum of its proper divisors (34818456).

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

19794984 is a wasteful number, since it uses less digits than its factorization.

19794984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890 (or 886 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The square root of 19794984 is about 4449.1554254712. The cubic root of 19794984 is about 270.5110758833.

The spelling of 19794984 in words is "nineteen million, seven hundred ninety-four thousand, nine hundred eighty-four".