23102845 has 4 divisors (see below), whose sum is σ = 27723420. Its totient is φ = 18482272.

The previous prime is 23102819. The next prime is 23102851. The reversal of 23102845 is 54820132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9947716 + 13155129 = 3154^2 + 3627^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23102845 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2310280 + ... + 2310289.

It is an arithmetic number, because the mean of its divisors is an integer number (6930855).

Almost surely, 2^23102845 is an apocalyptic number.

It is an amenable number.

23102845 is a deficient number, since it is larger than the sum of its proper divisors (4620575).

23102845 is an equidigital number, since it uses as much as digits as its factorization.

23102845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620574.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 23102845 is about 4806.5418962077. The cubic root of 23102845 is about 284.8099481873.

Adding to 23102845 its reverse (54820132), we get a palindrome (77922977).

The spelling of 23102845 in words is "twenty-three million, one hundred two thousand, eight hundred forty-five".