20233256 has 16 divisors (see below), whose sum is σ = 38216340. Its totient is φ = 10042240.

The previous prime is 20233249. The next prime is 20233289. The reversal of 20233256 is 65233202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19096900 + 1136356 = 4370^2 + 1066^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8135 + ... + 10326.

Almost surely, 2^20233256 is an apocalyptic number.

It is an amenable number.

20233256 is a deficient number, since it is larger than the sum of its proper divisors (17983084).

20233256 is a wasteful number, since it uses less digits than its factorization.

20233256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18604 (or 18600 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 20233256 is about 4498.1391708127. The cubic root of 20233256 is about 272.4929426110.

Adding to 20233256 its reverse (65233202), we get a palindrome (85466458).

The spelling of 20233256 in words is "twenty million, two hundred thirty-three thousand, two hundred fifty-six".