19828641 has 16 divisors (see below), whose sum is σ = 30374784. Its totient is φ = 11270784.

The previous prime is 19828619. The next prime is 19828649. The reversal of 19828641 is 14682891.

It is not a de Polignac number, because 19828641 - 2⁷ = 19828513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19828641.

It is not an unprimeable number, because it can be changed into a prime (19828649) 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 15 ways as a sum of consecutive naturals, for example, 1741 + ... + 6533.

It is an arithmetic number, because the mean of its divisors is an integer number (1898424).

Almost surely, 2^19828641 is an apocalyptic number.

It is an amenable number.

19828641 is a deficient number, since it is larger than the sum of its proper divisors (10546143).

19828641 is a wasteful number, since it uses less digits than its factorization.

19828641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000.

The product of its digits is 27648, while the sum is 39.

The square root of 19828641 is about 4452.9362223144. The cubic root of 19828641 is about 270.6643038599.

The spelling of 19828641 in words is "nineteen million, eight hundred twenty-eight thousand, six hundred forty-one".