19870048 has 48 divisors (see below), whose sum is σ = 44936640. Its totient is φ = 8553600.

The previous prime is 19870031. The next prime is 19870057. The reversal of 19870048 is 84007891.

It is a junction number, because it is equal to n+sod(n) for n = 19869989 and 19870016.

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, 5203 + ... + 8173.

It is an arithmetic number, because the mean of its divisors is an integer number (936180).

Almost surely, 2^19870048 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 19870048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22468320).

19870048 is an abundant number, since it is smaller than the sum of its proper divisors (25066592).

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

19870048 is a wasteful number, since it uses less digits than its factorization.

19870048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011 (or 3003 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 19870048 is about 4457.5832016912. The cubic root of 19870048 is about 270.8525770521.

The spelling of 19870048 in words is "nineteen million, eight hundred seventy thousand, forty-eight".