23656442 has 8 divisors (see below), whose sum is σ = 35597556. Its totient is φ = 11790592.

The previous prime is 23656363. The next prime is 23656447. The reversal of 23656442 is 24465632.

It can be written as a sum of positive squares in 2 ways, for example, as 23512801 + 143641 = 4849^2 + 379^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 23656399 and 23656408.

It is not an unprimeable number, because it can be changed into a prime (23656447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18023 + ... + 19290.

Almost surely, 2^23656442 is an apocalyptic number.

23656442 is a deficient number, since it is larger than the sum of its proper divisors (11941114).

23656442 is a wasteful number, since it uses less digits than its factorization.

23656442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37632.

The product of its digits is 34560, while the sum is 32.

The square root of 23656442 is about 4863.7888523249. The cubic root of 23656442 is about 287.0669149173.

The spelling of 23656442 in words is "twenty-three million, six hundred fifty-six thousand, four hundred forty-two".