20117426 has 32 divisors (see below), whose sum is σ = 36796032. Its totient is φ = 8052480.

The previous prime is 20117411. The next prime is 20117431. The reversal of 20117426 is 62471102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42845 + ... + 43311.

It is an arithmetic number, because the mean of its divisors is an integer number (1149876).

Almost surely, 2^20117426 is an apocalyptic number.

20117426 is a deficient number, since it is larger than the sum of its proper divisors (16678606).

20117426 is a wasteful number, since it uses less digits than its factorization.

20117426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 20117426 is about 4485.2453667553. The cubic root of 20117426 is about 271.9719640221.

Adding to 20117426 its reverse (62471102), we get a palindrome (82588528).

The spelling of 20117426 in words is "twenty million, one hundred seventeen thousand, four hundred twenty-six".