19328020 has 12 divisors (see below), whose sum is σ = 40588884. Its totient is φ = 7731200.

The previous prime is 19328017. The next prime is 19328021. The reversal of 19328020 is 2082391.

It can be written as a sum of positive squares in 2 ways, for example, as 2452356 + 16875664 = 1566^2 + 4108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19328021) 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 3 ways as a sum of consecutive naturals, for example, 483181 + ... + 483220.

It is an arithmetic number, because the mean of its divisors is an integer number (3382407).

Almost surely, 2^19328020 is an apocalyptic number.

19328020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19328020 is an abundant number, since it is smaller than the sum of its proper divisors (21260864).

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

19328020 is a wasteful number, since it uses less digits than its factorization.

19328020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966410 (or 966408 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 19328020 is about 4396.3644070982. The cubic root of 19328020 is about 268.3670066491.

The spelling of 19328020 in words is "nineteen million, three hundred twenty-eight thousand, twenty".