19998414 has 24 divisors (see below), whose sum is σ = 44935800. Its totient is φ = 6665976.

The previous prime is 19998413. The next prime is 19998427. The reversal of 19998414 is 41489991.

It is a self number, because there is not a number n which added to its sum of digits gives 19998414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19998413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20089 + ... + 21060.

It is an arithmetic number, because the mean of its divisors is an integer number (1872325).

Almost surely, 2^19998414 is an apocalyptic number.

19998414 is an abundant number, since it is smaller than the sum of its proper divisors (24937386).

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

19998414 is an equidigital number, since it uses as much as digits as its factorization.

19998414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41166 (or 41154 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 19998414 is about 4471.9586312935. The cubic root of 19998414 is about 271.4345863593.

The spelling of 19998414 in words is "nineteen million, nine hundred ninety-eight thousand, four hundred fourteen".