20260256 has 12 divisors (see below), whose sum is σ = 39887442. Its totient is φ = 10130112.

The previous prime is 20260237. The next prime is 20260259. The reversal of 20260256 is 65206202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13808656 + 6451600 = 3716^2 + 2540^2 .

It is not an unprimeable number, because it can be changed into a prime (20260259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316535 + ... + 316598.

Almost surely, 2^20260256 is an apocalyptic number.

It is an amenable number.

20260256 is a deficient number, since it is larger than the sum of its proper divisors (19627186).

20260256 is an equidigital number, since it uses as much as digits as its factorization.

20260256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633143 (or 633135 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20260256 is about 4501.1394113047. The cubic root of 20260256 is about 272.6140969333.

Adding to 20260256 its reverse (65206202), we get a palindrome (85466458).

The spelling of 20260256 in words is "twenty million, two hundred sixty thousand, two hundred fifty-six".