23081438 has 8 divisors (see below), whose sum is σ = 35011440. Its totient is φ = 11410960.

The previous prime is 23081431. The next prime is 23081491. The reversal of 23081438 is 83418032.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23081438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23081431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64658 + ... + 65013.

It is an arithmetic number, because the mean of its divisors is an integer number (4376430).

Almost surely, 2^23081438 is an apocalyptic number.

23081438 is a deficient number, since it is larger than the sum of its proper divisors (11930002).

23081438 is a wasteful number, since it uses less digits than its factorization.

23081438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129762.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 23081438 is about 4804.3145192629. The cubic root of 23081438 is about 284.7219530989.

The spelling of 23081438 in words is "twenty-three million, eighty-one thousand, four hundred thirty-eight".