23145656 has 8 divisors (see below), whose sum is σ = 43398120. Its totient is φ = 11572824.

The previous prime is 23145637. The next prime is 23145691. The reversal of 23145656 is 65654132.

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

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1446596 + ... + 1446611.

It is an arithmetic number, because the mean of its divisors is an integer number (5424765).

Almost surely, 2^23145656 is an apocalyptic number.

It is an amenable number.

23145656 is a deficient number, since it is larger than the sum of its proper divisors (20252464).

23145656 is a wasteful number, since it uses less digits than its factorization.

23145656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893213 (or 2893209 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 23145656 is about 4810.9932446429. The cubic root of 23145656 is about 284.9857631136.

Adding to 23145656 its reverse (65654132), we get a palindrome (88799788).

The spelling of 23145656 in words is "twenty-three million, one hundred forty-five thousand, six hundred fifty-six".