20686126 has 8 divisors (see below), whose sum is σ = 31190544. Its totient is φ = 10289280.

The previous prime is 20686111. The next prime is 20686147. The reversal of 20686126 is 62168602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26410 + ... + 27181.

It is an arithmetic number, because the mean of its divisors is an integer number (3898818).

Almost surely, 2^20686126 is an apocalyptic number.

20686126 is a deficient number, since it is larger than the sum of its proper divisors (10504418).

20686126 is a wasteful number, since it uses less digits than its factorization.

20686126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53786.

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

The square root of 20686126 is about 4548.2003034167. The cubic root of 20686126 is about 274.5109810549.

The spelling of 20686126 in words is "twenty million, six hundred eighty-six thousand, one hundred twenty-six".