19982888 has 16 divisors (see below), whose sum is σ = 39672180. Its totient is φ = 9403648.

The previous prime is 19982881. The next prime is 19982891. The reversal of 19982888 is 88828991.

It can be written as a sum of positive squares in 2 ways, for example, as 19377604 + 605284 = 4402^2 + 778^2 .

It is not an unprimeable number, because it can be changed into a prime (19982881) 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, 73331 + ... + 73602.

Almost surely, 2^19982888 is an apocalyptic number.

It is an amenable number.

19982888 is a deficient number, since it is larger than the sum of its proper divisors (19689292).

19982888 is a wasteful number, since it uses less digits than its factorization.

19982888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146956 (or 146952 counting only the distinct ones).

The product of its digits is 663552, while the sum is 53.

The square root of 19982888 is about 4470.2223658337. Note that the first 3 decimals coincide. The cubic root of 19982888 is about 271.3643243798.

The spelling of 19982888 in words is "nineteen million, nine hundred eighty-two thousand, eight hundred eighty-eight".