20385826 has 4 divisors (see below), whose sum is σ = 30578742. Its totient is φ = 10192912.

The previous prime is 20385823. The next prime is 20385851. The reversal of 20385826 is 62858302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14630625 + 5755201 = 3825^2 + 2399^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20385791 and 20385800.

It is not an unprimeable number, because it can be changed into a prime (20385823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5096455 + ... + 5096458.

Almost surely, 2^20385826 is an apocalyptic number.

20385826 is a deficient number, since it is larger than the sum of its proper divisors (10192916).

20385826 is a wasteful number, since it uses less digits than its factorization.

20385826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10192915.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 20385826 is about 4515.0665554341. The cubic root of 20385826 is about 273.1761443356.

The spelling of 20385826 in words is "twenty million, three hundred eighty-five thousand, eight hundred twenty-six".