19550828 has 24 divisors (see below), whose sum is σ = 38949120. Its totient is φ = 8499920.

The previous prime is 19550827. The next prime is 19550831. The reversal of 19550828 is 82805591.

It is a junction number, because it is equal to n+sod(n) for n = 19550791 and 19550800.

It is not an unprimeable number, because it can be changed into a prime (19550821) by changing a digit.

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, 8648 + ... + 10671.

It is an arithmetic number, because the mean of its divisors is an integer number (1622880).

Almost surely, 2^19550828 is an apocalyptic number.

It is an amenable number.

19550828 is a deficient number, since it is larger than the sum of its proper divisors (19398292).

19550828 is a wasteful number, since it uses less digits than its factorization.

19550828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19357 (or 19355 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 19550828 is about 4421.6318254690. The cubic root of 19550828 is about 269.3942891856.

The spelling of 19550828 in words is "nineteen million, five hundred fifty thousand, eight hundred twenty-eight".