19834668 has 72 divisors (see below), whose sum is σ = 59171840. Its totient is φ = 5482080.

The previous prime is 19834603. The next prime is 19834681. The reversal of 19834668 is 86643891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6543 + ... + 9081.

Almost surely, 2^19834668 is an apocalyptic number.

19834668 is a gapful number since it is divisible by the number (18) 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 19834668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29585920).

19834668 is an abundant number, since it is smaller than the sum of its proper divisors (39337172).

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

19834668 is a wasteful number, since it uses less digits than its factorization.

19834668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587 (or 2582 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 19834668 is about 4453.6129153756. The cubic root of 19834668 is about 270.6917242717.

It can be divided in two parts, 19834 and 668, that added together give a palindrome (20502).

The spelling of 19834668 in words is "nineteen million, eight hundred thirty-four thousand, six hundred sixty-eight".