20101926 has 16 divisors (see below), whose sum is σ = 43296624. Its totient is φ = 6185184.

The previous prime is 20101883. The next prime is 20101927. The reversal of 20101926 is 62910102.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101927) 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, 128781 + ... + 128936.

It is an arithmetic number, because the mean of its divisors is an integer number (2706039).

Almost surely, 2^20101926 is an apocalyptic number.

20101926 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20101926 is an abundant number, since it is smaller than the sum of its proper divisors (23194698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101926 is a wasteful number, since it uses less digits than its factorization.

20101926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257735.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 20101926 is about 4483.5171461700. The cubic root of 20101926 is about 271.9020967576.

The spelling of 20101926 in words is "twenty million, one hundred one thousand, nine hundred twenty-six".