23449145 has 4 divisors (see below), whose sum is σ = 28138980. Its totient is φ = 18759312.

The previous prime is 23449141. The next prime is 23449159. The reversal of 23449145 is 54194432.

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 15936064 + 7513081 = 3992^2 + 2741^2 .

It is a cyclic number.

It is not a de Polignac number, because 23449145 - 2² = 23449141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23449141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2344910 + ... + 2344919.

It is an arithmetic number, because the mean of its divisors is an integer number (7034745).

Almost surely, 2^23449145 is an apocalyptic number.

It is an amenable number.

23449145 is a deficient number, since it is larger than the sum of its proper divisors (4689835).

23449145 is an equidigital number, since it uses as much as digits as its factorization.

23449145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4689834.

The product of its digits is 17280, while the sum is 32.

The square root of 23449145 is about 4842.4317238346. The cubic root of 23449145 is about 286.2259490481.

The spelling of 23449145 in words is "twenty-three million, four hundred forty-nine thousand, one hundred forty-five".