20126648 has 16 divisors (see below), whose sum is σ = 37849680. Its totient is φ = 10033408.

The previous prime is 20126597. The next prime is 20126663. The reversal of 20126648 is 84662102.

It is a self number, because there is not a number n which added to its sum of digits gives 20126648.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 740 + ... + 6387.

It is an arithmetic number, because the mean of its divisors is an integer number (2365605).

Almost surely, 2^20126648 is an apocalyptic number.

It is an amenable number.

20126648 is a deficient number, since it is larger than the sum of its proper divisors (17723032).

20126648 is a wasteful number, since it uses less digits than its factorization.

20126648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7486 (or 7482 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 20126648 is about 4486.2732863703. The cubic root of 20126648 is about 272.0135157644.

The spelling of 20126648 in words is "twenty million, one hundred twenty-six thousand, six hundred forty-eight".