20410256 has 20 divisors (see below), whose sum is σ = 41626800. Its totient is φ = 9667872.

The previous prime is 20410213. The next prime is 20410259. The reversal of 20410256 is 65201402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20410259) 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, 33266 + ... + 33873.

It is an arithmetic number, because the mean of its divisors is an integer number (2081340).

Almost surely, 2^20410256 is an apocalyptic number.

It is an amenable number.

20410256 is an abundant number, since it is smaller than the sum of its proper divisors (21216544).

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

20410256 is a wasteful number, since it uses less digits than its factorization.

20410256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67166 (or 67160 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20410256 is about 4517.7711318747. The cubic root of 20410256 is about 273.2852238680.

Adding to 20410256 its reverse (65201402), we get a palindrome (85611658).

The spelling of 20410256 in words is "twenty million, four hundred ten thousand, two hundred fifty-six".