20338626 has 96 divisors (see below), whose sum is σ = 54501120. Its totient is φ = 4989600.

The previous prime is 20338621. The next prime is 20338627. The reversal of 20338626 is 62683302.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20338593 and 20338602.

It is not an unprimeable number, because it can be changed into a prime (20338621) 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 47 ways as a sum of consecutive naturals, for example, 61281 + ... + 61611.

It is an arithmetic number, because the mean of its divisors is an integer number (567720).

Almost surely, 2^20338626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20338626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27250560).

20338626 is an abundant number, since it is smaller than the sum of its proper divisors (34162494).

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

20338626 is a wasteful number, since it uses less digits than its factorization.

20338626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 20338626 is about 4509.8365824052. The cubic root of 20338626 is about 272.9651500550.

The spelling of 20338626 in words is "twenty million, three hundred thirty-eight thousand, six hundred twenty-six".