20108426 has 16 divisors (see below), whose sum is σ = 33604200. Its totient is φ = 8960448.

The previous prime is 20108419. The next prime is 20108437. The reversal of 20108426 is 62480102.

It can be written as a sum of positive squares in 4 ways, for example, as 18931201 + 1177225 = 4351^2 + 1085^2 .

It is a Curzon number.

It is an unprimeable number.

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, 12581 + ... + 14088.

Almost surely, 2^20108426 is an apocalyptic number.

20108426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20108426 is a deficient number, since it is larger than the sum of its proper divisors (13495774).

20108426 is a wasteful number, since it uses less digits than its factorization.

20108426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26713.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20108426 is about 4484.2419649256. The cubic root of 20108426 is about 271.9314003041.

Adding to 20108426 its reverse (62480102), we get a palindrome (82588528).

The spelling of 20108426 in words is "twenty million, one hundred eight thousand, four hundred twenty-six".