23281238 has 4 divisors (see below), whose sum is σ = 34921860. Its totient is φ = 11640618.

The previous prime is 23281231. The next prime is 23281241. The reversal of 23281238 is 83218232.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23281238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23281231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5820308 + ... + 5820311.

It is an arithmetic number, because the mean of its divisors is an integer number (8730465).

Almost surely, 2^23281238 is an apocalyptic number.

23281238 is a deficient number, since it is larger than the sum of its proper divisors (11640622).

23281238 is a wasteful number, since it uses less digits than its factorization.

23281238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11640621.

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

The square root of 23281238 is about 4825.0635228979. The cubic root of 23281238 is about 285.5411407369.

The spelling of 23281238 in words is "twenty-three million, two hundred eighty-one thousand, two hundred thirty-eight".