23563156 has 24 divisors (see below), whose sum is σ = 43825320. Its totient is φ = 11046912.

The previous prime is 23563147. The next prime is 23563157. The reversal of 23563156 is 65136532.

It can be written as a sum of positive squares in 4 ways, for example, as 1322500 + 22240656 = 1150^2 + 4716^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23563157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24900 + ... + 25828.

It is an arithmetic number, because the mean of its divisors is an integer number (1826055).

Almost surely, 2^23563156 is an apocalyptic number.

It is an amenable number.

23563156 is a deficient number, since it is larger than the sum of its proper divisors (20262164).

23563156 is a wasteful number, since it uses less digits than its factorization.

23563156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323 (or 1321 counting only the distinct ones).

The product of its digits is 16200, while the sum is 31.

The square root of 23563156 is about 4854.1895307044. The cubic root of 23563156 is about 286.6890812352.

Adding to 23563156 its reverse (65136532), we get a palindrome (88699688).

The spelling of 23563156 in words is "twenty-three million, five hundred sixty-three thousand, one hundred fifty-six".