23458945 has 4 divisors (see below), whose sum is σ = 28150740. Its totient is φ = 18767152.

The previous prime is 23458943. The next prime is 23458949. The reversal of 23458945 is 54985432.

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 11075584 + 12383361 = 3328^2 + 3519^2 .

It is a cyclic number.

It is not a de Polignac number, because 23458945 - 2¹ = 23458943 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 23458898 and 23458907.

It is not an unprimeable number, because it can be changed into a prime (23458943) 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, 2345890 + ... + 2345899.

It is an arithmetic number, because the mean of its divisors is an integer number (7037685).

Almost surely, 2^23458945 is an apocalyptic number.

It is an amenable number.

23458945 is a deficient number, since it is larger than the sum of its proper divisors (4691795).

23458945 is an equidigital number, since it uses as much as digits as its factorization.

23458945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691794.

The product of its digits is 172800, while the sum is 40.

The square root of 23458945 is about 4843.4435064322. The cubic root of 23458945 is about 286.2658172200.

The spelling of 23458945 in words is "twenty-three million, four hundred fifty-eight thousand, nine hundred forty-five".