23305445 has 4 divisors (see below), whose sum is σ = 27966540. Its totient is φ = 18644352.

The previous prime is 23305421. The next prime is 23305483. The reversal of 23305445 is 54450332.

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 2502724 + 20802721 = 1582^2 + 4561^2 .

It is a cyclic number.

It is not a de Polignac number, because 23305445 - 2¹² = 23301349 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, 2330540 + ... + 2330549.

It is an arithmetic number, because the mean of its divisors is an integer number (6991635).

Almost surely, 2^23305445 is an apocalyptic number.

It is an amenable number.

23305445 is a deficient number, since it is larger than the sum of its proper divisors (4661095).

23305445 is an equidigital number, since it uses as much as digits as its factorization.

23305445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4661094.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 23305445 is about 4827.5713355682. The cubic root of 23305445 is about 285.6400716175.

Adding to 23305445 its reverse (54450332), we get a palindrome (77755777).

The spelling of 23305445 in words is "twenty-three million, three hundred five thousand, four hundred forty-five".