20126256 has 20 divisors (see below), whose sum is σ = 51992952. Its totient is φ = 6708736.

The previous prime is 20126251. The next prime is 20126287. The reversal of 20126256 is 65262102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20126251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209601 + ... + 209696.

Almost surely, 2^20126256 is an apocalyptic number.

It is an amenable number.

20126256 is an abundant number, since it is smaller than the sum of its proper divisors (31866696).

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

20126256 is a wasteful number, since it uses less digits than its factorization.

20126256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419308 (or 419302 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20126256 is about 4486.2295973345. The cubic root of 20126256 is about 272.0117497808.

Adding to 20126256 its reverse (65262102), we get a palindrome (85388358).

The spelling of 20126256 in words is "twenty million, one hundred twenty-six thousand, two hundred fifty-six".