23663138 has 4 divisors (see below), whose sum is σ = 35494710. Its totient is φ = 11831568.

The previous prime is 23663119. The next prime is 23663141. The reversal of 23663138 is 83136632.

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

It can be written as a sum of positive squares in only one way, i.e., 19070689 + 4592449 = 4367^2 + 2143^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5915783 + ... + 5915786.

Almost surely, 2^23663138 is an apocalyptic number.

23663138 is a deficient number, since it is larger than the sum of its proper divisors (11831572).

23663138 is a wasteful number, since it uses less digits than its factorization.

23663138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11831571.

The product of its digits is 15552, while the sum is 32.

The square root of 23663138 is about 4864.4771558719. The cubic root of 23663138 is about 287.0939973040.

The spelling of 23663138 in words is "twenty-three million, six hundred sixty-three thousand, one hundred thirty-eight".