20168884 has 24 divisors (see below), whose sum is σ = 37735488. Its totient is φ = 9408960.

The previous prime is 20168873. The next prime is 20168887. The reversal of 20168884 is 48886102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20168887) 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 7 ways as a sum of consecutive naturals, for example, 1099 + ... + 6445.

It is an arithmetic number, because the mean of its divisors is an integer number (1572312).

Almost surely, 2^20168884 is an apocalyptic number.

It is an amenable number.

20168884 is a deficient number, since it is larger than the sum of its proper divisors (17566604).

20168884 is a wasteful number, since it uses less digits than its factorization.

20168884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5415 (or 5413 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 20168884 is about 4490.9780671920. The cubic root of 20168884 is about 272.2036573083.

The spelling of 20168884 in words is "twenty million, one hundred sixty-eight thousand, eight hundred eighty-four".