19685848 has 48 divisors (see below), whose sum is σ = 46252080. Its totient is φ = 7785792.

The previous prime is 19685839. The next prime is 19685849. The reversal of 19685848 is 84858691.

It is a super-2 number, since 2×19685848² = 775065222958208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19685849) 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 11 ways as a sum of consecutive naturals, for example, 3165 + ... + 7027.

It is an arithmetic number, because the mean of its divisors is an integer number (963585).

Almost surely, 2^19685848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19685848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23126040).

19685848 is an abundant number, since it is smaller than the sum of its proper divisors (26566232).

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

19685848 is a wasteful number, since it uses less digits than its factorization.

19685848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3896 (or 3885 counting only the distinct ones).

The product of its digits is 552960, while the sum is 49.

The square root of 19685848 is about 4436.8736741088. The cubic root of 19685848 is about 270.0130217771.

The spelling of 19685848 in words is "nineteen million, six hundred eighty-five thousand, eight hundred forty-eight".