23115447 has 12 divisors (see below), whose sum is σ = 33439224. Its totient is φ = 15387120.

The previous prime is 23115409. The next prime is 23115451. The reversal of 23115447 is 74451132.

It is not a de Polignac number, because 23115447 - 2⁶ = 23115383 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 23115447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23115497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6172 + ... + 9182.

It is an arithmetic number, because the mean of its divisors is an integer number (2786602).

Almost surely, 2^23115447 is an apocalyptic number.

23115447 is a deficient number, since it is larger than the sum of its proper divisors (10323777).

23115447 is a wasteful number, since it uses less digits than its factorization.

23115447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3870 (or 3867 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 23115447 is about 4807.8526391727. The cubic root of 23115447 is about 284.8617242429.

Adding to 23115447 its reverse (74451132), we get a palindrome (97566579).

The spelling of 23115447 in words is "twenty-three million, one hundred fifteen thousand, four hundred forty-seven".