20009926 has 16 divisors (see below), whose sum is σ = 31725360. Its totient is φ = 9439200.

The previous prime is 20009923. The next prime is 20009929. The reversal of 20009926 is 62990002.

It is an interprime number because it is at equal distance from previous prime (20009923) and next prime (20009929).

It is a junction number, because it is equal to n+sod(n) for n = 20009894 and 20009903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20009923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9576 + ... + 11476.

It is an arithmetic number, because the mean of its divisors is an integer number (1982835).

Almost surely, 2^20009926 is an apocalyptic number.

20009926 is a deficient number, since it is larger than the sum of its proper divisors (11715434).

20009926 is a wasteful number, since it uses less digits than its factorization.

20009926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 20009926 is about 4473.2455778774. The cubic root of 20009926 is about 271.4866597481.

Adding to 20009926 its reverse (62990002), we get a palindrome (82999928).

The spelling of 20009926 in words is "twenty million, nine thousand, nine hundred twenty-six".