20053256 has 8 divisors (see below), whose sum is σ = 37599870. Its totient is φ = 10026624.

The previous prime is 20053237. The next prime is 20053259. The reversal of 20053256 is 65235002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13468900 + 6584356 = 3670^2 + 2566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20053259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253321 + ... + 1253336.

Almost surely, 2^20053256 is an apocalyptic number.

It is an amenable number.

20053256 is a deficient number, since it is larger than the sum of its proper divisors (17546614).

20053256 is a wasteful number, since it uses less digits than its factorization.

20053256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506663 (or 2506659 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 20053256 is about 4478.0861983664. The cubic root of 20053256 is about 271.6824798320.

Adding to 20053256 its reverse (65235002), we get a palindrome (85288258).

The spelling of 20053256 in words is "twenty million, fifty-three thousand, two hundred fifty-six".