20106256 has 45 divisors (see below), whose sum is σ = 41822751. Its totient is φ = 9362592.

The previous prime is 20106253. The next prime is 20106283. The reversal of 20106256 is 65260102.

The square root of 20106256 is 4484.

It is a perfect power (a square), and thus also a powerful number.

20106256 is nontrivially palindromic in base 3.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20106253) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 340755 + ... + 340813.

Almost surely, 2^20106256 is an apocalyptic number.

20106256 is the 4484-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20106256

20106256 is an abundant number, since it is smaller than the sum of its proper divisors (21716495).

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

20106256 is an equidigital number, since it uses as much as digits as its factorization.

20106256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The cubic root of 20106256 is about 271.9216181301.

Adding to 20106256 its reverse (65260102), we get a palindrome (85366358).

It can be divided in two parts, 20 and 106256, that added together give a square (106276 = 326²).

The spelling of 20106256 in words is "twenty million, one hundred six thousand, two hundred fifty-six".