19889214 has 16 divisors (see below), whose sum is σ = 39907728. Its totient is φ = 6608192.

The previous prime is 19889213. The next prime is 19889237. The reversal of 19889214 is 41298891.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19889213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3327 + ... + 7130.

It is an arithmetic number, because the mean of its divisors is an integer number (2494233).

Almost surely, 2^19889214 is an apocalyptic number.

19889214 is an abundant number, since it is smaller than the sum of its proper divisors (20018514).

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

19889214 is a wasteful number, since it uses less digits than its factorization.

19889214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10779.

The product of its digits is 41472, while the sum is 42.

The square root of 19889214 is about 4459.7325031890. The cubic root of 19889214 is about 270.9396342535.

The spelling of 19889214 in words is "nineteen million, eight hundred eighty-nine thousand, two hundred fourteen".