19956448 has 24 divisors (see below), whose sum is σ = 39832128. Its totient is φ = 9840384.

The previous prime is 19956439. The next prime is 19956449. The reversal of 19956448 is 84465991.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19956398 and 19956407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19956449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1936 + ... + 6607.

It is an arithmetic number, because the mean of its divisors is an integer number (1659672).

Almost surely, 2^19956448 is an apocalyptic number.

It is an amenable number.

19956448 is a deficient number, since it is larger than the sum of its proper divisors (19875680).

19956448 is an equidigital number, since it uses as much as digits as its factorization.

19956448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8626 (or 8618 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 19956448 is about 4467.2640396556. The cubic root of 19956448 is about 271.2445879416.

The spelling of 19956448 in words is "nineteen million, nine hundred fifty-six thousand, four hundred forty-eight".