19834428 has 12 divisors (see below), whose sum is σ = 46280360. Its totient is φ = 6611472.

The previous prime is 19834411. The next prime is 19834429. The reversal of 19834428 is 82443891.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19834429) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 826423 + ... + 826446.

Almost surely, 2^19834428 is an apocalyptic number.

It is an amenable number.

19834428 is an abundant number, since it is smaller than the sum of its proper divisors (26445932).

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

19834428 is a wasteful number, since it uses less digits than its factorization.

19834428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652876 (or 1652874 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 19834428 is about 4453.5859708778. The cubic root of 19834428 is about 270.6906324750.

The spelling of 19834428 in words is "nineteen million, eight hundred thirty-four thousand, four hundred twenty-eight".