23115730 has 16 divisors (see below), whose sum is σ = 45391104. Its totient is φ = 8405680.

The previous prime is 23115721. The next prime is 23115731. The reversal of 23115730 is 3751132.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (23115731) 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 7 ways as a sum of consecutive naturals, for example, 104962 + ... + 105181.

It is an arithmetic number, because the mean of its divisors is an integer number (2836944).

Almost surely, 2^23115730 is an apocalyptic number.

23115730 is a deficient number, since it is larger than the sum of its proper divisors (22275374).

23115730 is a wasteful number, since it uses less digits than its factorization.

23115730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210161.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 23115730 is about 4807.8820701011. The cubic root of 23115730 is about 284.8628867489.

Adding to 23115730 its reverse (3751132), we get a palindrome (26866862).

The spelling of 23115730 in words is "twenty-three million, one hundred fifteen thousand, seven hundred thirty".