19826994 has 64 divisors (see below), whose sum is σ = 46287360. Its totient is φ = 5598720.

The previous prime is 19826971. The next prime is 19827023. The reversal of 19826994 is 49962891.

It is a Curzon number.

It is an unprimeable number.

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, 121557 + ... + 121719.

It is an arithmetic number, because the mean of its divisors is an integer number (723240).

Almost surely, 2^19826994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19826994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23143680).

19826994 is an abundant number, since it is smaller than the sum of its proper divisors (26460366).

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

19826994 is a wasteful number, since it uses less digits than its factorization.

19826994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295.

The product of its digits is 279936, while the sum is 48.

The square root of 19826994 is about 4452.7512843185. The cubic root of 19826994 is about 270.6568097095.

The spelling of 19826994 in words is "nineteen million, eight hundred twenty-six thousand, nine hundred ninety-four".