19954944 has 72 divisors (see below), whose sum is σ = 59030720. Its totient is φ = 6649344.

The previous prime is 19954939. The next prime is 19954969. The reversal of 19954944 is 44945991.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-3 number, since 3×19954944³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19954944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5469 + ... + 8355.

Almost surely, 2^19954944 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 19954944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29515360).

19954944 is an abundant number, since it is smaller than the sum of its proper divisors (39075776).

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

19954944 is an equidigital number, since it uses as much as digits as its factorization.

19954944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912 (or 2892 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 19954944 is about 4467.0957007882. The cubic root of 19954944 is about 271.2377737345.

The spelling of 19954944 in words is "nineteen million, nine hundred fifty-four thousand, nine hundred forty-four".