20126668 has 24 divisors (see below), whose sum is σ = 36388800. Its totient is φ = 9733248.

The previous prime is 20126663. The next prime is 20126671. The reversal of 20126668 is 86662102.

20126668 is nontrivially palindromic in base 3.

It is not an unprimeable number, because it can be changed into a prime (20126663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35088 + ... + 35656.

It is an arithmetic number, because the mean of its divisors is an integer number (1516200).

Almost surely, 2^20126668 is an apocalyptic number.

It is an amenable number.

20126668 is a deficient number, since it is larger than the sum of its proper divisors (16262132).

20126668 is a wasteful number, since it uses less digits than its factorization.

20126668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 20126668 is about 4486.2755153914. The cubic root of 20126668 is about 272.0136058650.

The spelling of 20126668 in words is "twenty million, one hundred twenty-six thousand, six hundred sixty-eight".