19828680 has 64 divisors (see below), whose sum is σ = 59780160. Its totient is φ = 5261568.

The previous prime is 19828657. The next prime is 19828693. The reversal of 19828680 is 8682891.

It is an unprimeable number.

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, 44539 + ... + 44981.

It is an arithmetic number, because the mean of its divisors is an integer number (934065).

Almost surely, 2^19828680 is an apocalyptic number.

19828680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19828680 is an abundant number, since it is smaller than the sum of its proper divisors (39951480).

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

19828680 is a wasteful number, since it uses less digits than its factorization.

19828680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 826 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 19828680 is about 4452.9406014453. The cubic root of 19828680 is about 270.6644813119.

The spelling of 19828680 in words is "nineteen million, eight hundred twenty-eight thousand, six hundred eighty".