23109638 has 4 divisors (see below), whose sum is σ = 34664460. Its totient is φ = 11554818.

The previous prime is 23109637. The next prime is 23109649. The reversal of 23109638 is 83690132.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23109631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777408 + ... + 5777411.

It is an arithmetic number, because the mean of its divisors is an integer number (8666115).

Almost surely, 2^23109638 is an apocalyptic number.

23109638 is a deficient number, since it is larger than the sum of its proper divisors (11554822).

23109638 is a wasteful number, since it uses less digits than its factorization.

23109638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11554821.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 23109638 is about 4807.2484853604. The cubic root of 23109638 is about 284.8378599644.

The spelling of 23109638 in words is "twenty-three million, one hundred nine thousand, six hundred thirty-eight".