23667438 has 24 divisors (see below), whose sum is σ = 47925864. Its totient is φ = 7791600.

The previous prime is 23667419. The next prime is 23667439. The reversal of 23667438 is 83476632.

It is a junction number, because it is equal to n+sod(n) for n = 23667396 and 23667405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23667439) 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 11 ways as a sum of consecutive naturals, for example, 136720 + ... + 136892.

It is an arithmetic number, because the mean of its divisors is an integer number (1996911).

Almost surely, 2^23667438 is an apocalyptic number.

23667438 is an abundant number, since it is smaller than the sum of its proper divisors (24258426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23667438 is a wasteful number, since it uses less digits than its factorization.

23667438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 329 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 23667438 is about 4864.9191154633. The cubic root of 23667438 is about 287.1113862266. Note that the first 3 decimals are identical.

The spelling of 23667438 in words is "twenty-three million, six hundred sixty-seven thousand, four hundred thirty-eight".