19954452 has 96 divisors (see below), whose sum is σ = 56197120. Its totient is φ = 5391360.

The previous prime is 19954439. The next prime is 19954453. The reversal of 19954452 is 25445991.

It is a self number, because there is not a number n which added to its sum of digits gives 19954452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19954453) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 205668 + ... + 205764.

Almost surely, 2^19954452 is an apocalyptic number.

19954452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19954452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28098560).

19954452 is an abundant number, since it is smaller than the sum of its proper divisors (36242668).

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

19954452 is a wasteful number, since it uses less digits than its factorization.

19954452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 219 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 19954452 is about 4467.0406311114. The cubic root of 19954452 is about 271.2355445446.

The spelling of 19954452 in words is "nineteen million, nine hundred fifty-four thousand, four hundred fifty-two".