19842216 has 16 divisors (see below), whose sum is σ = 49605600. Its totient is φ = 6614064.

The previous prime is 19842209. The next prime is 19842217. The reversal of 19842216 is 61224891.

It is not an unprimeable number, because it can be changed into a prime (19842217) 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, 413356 + ... + 413403.

It is an arithmetic number, because the mean of its divisors is an integer number (3100350).

Almost surely, 2^19842216 is an apocalyptic number.

It is an amenable number.

19842216 is an abundant number, since it is smaller than the sum of its proper divisors (29763384).

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

19842216 is a wasteful number, since it uses less digits than its factorization.

19842216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826768 (or 826764 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 19842216 is about 4454.4602366617. The cubic root of 19842216 is about 270.7260567851.

The spelling of 19842216 in words is "nineteen million, eight hundred forty-two thousand, two hundred sixteen".