20650026 has 16 divisors (see below), whose sum is σ = 41415264. Its totient is φ = 6864144.

The previous prime is 20650013. The next prime is 20650027. The reversal of 20650026 is 62005602.

It is a junction number, because it is equal to n+sod(n) for n = 20649984 and 20650011.

It is not an unprimeable number, because it can be changed into a prime (20650027) by changing a digit.

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, 2376 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (2588454).

Almost surely, 2^20650026 is an apocalyptic number.

20650026 is an abundant number, since it is smaller than the sum of its proper divisors (20765238).

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

20650026 is a wasteful number, since it uses less digits than its factorization.

20650026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9605.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20650026 is about 4544.2299677723. The cubic root of 20650026 is about 274.3512021984.

Adding to 20650026 its reverse (62005602), we get a palindrome (82655628).

The spelling of 20650026 in words is "twenty million, six hundred fifty thousand, twenty-six".