19833428 has 24 divisors (see below), whose sum is σ = 36013824. Its totient is φ = 9547200.

The previous prime is 19833409. The next prime is 19833433. The reversal of 19833428 is 82433891.

It is a junction number, because it is equal to n+sod(n) for n = 19833391 and 19833400.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 37808 + ... + 38328.

It is an arithmetic number, because the mean of its divisors is an integer number (1500576).

Almost surely, 2^19833428 is an apocalyptic number.

It is an amenable number.

19833428 is a deficient number, since it is larger than the sum of its proper divisors (16180396).

19833428 is a wasteful number, since it uses less digits than its factorization.

19833428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 861 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 19833428 is about 4453.4737003827. The cubic root of 19833428 is about 270.6860832272.

The spelling of 19833428 in words is "nineteen million, eight hundred thirty-three thousand, four hundred twenty-eight".