19889050 has 24 divisors (see below), whose sum is σ = 37605852. Its totient is φ = 7824000.

The previous prime is 19889047. The next prime is 19889057. The reversal of 19889050 is 5098891.

It can be written as a sum of positive squares in 6 ways, for example, as 6295081 + 13593969 = 2509^2 + 3687^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19888994 and 19889012.

It is not an unprimeable number, because it can be changed into a prime (19889057) 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, 211 + ... + 6310.

Almost surely, 2^19889050 is an apocalyptic number.

19889050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19889050 is a deficient number, since it is larger than the sum of its proper divisors (17716802).

19889050 is a wasteful number, since it uses less digits than its factorization.

19889050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6594 (or 6589 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 19889050 is about 4459.7141163980. The cubic root of 19889050 is about 270.9388895580.

The spelling of 19889050 in words is "nineteen million, eight hundred eighty-nine thousand, fifty".