23206945 has 4 divisors (see below), whose sum is σ = 27848340. Its totient is φ = 18565552.

The previous prime is 23206927. The next prime is 23206957. The reversal of 23206945 is 54960232.

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 13075456 + 10131489 = 3616^2 + 3183^2 .

It is a cyclic number.

It is not a de Polignac number, because 23206945 - 2⁹ = 23206433 is a prime.

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, 2320690 + ... + 2320699.

It is an arithmetic number, because the mean of its divisors is an integer number (6962085).

Almost surely, 2^23206945 is an apocalyptic number.

It is an amenable number.

23206945 is a deficient number, since it is larger than the sum of its proper divisors (4641395).

23206945 is an equidigital number, since it uses as much as digits as its factorization.

23206945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4641394.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 23206945 is about 4817.3587161431. The cubic root of 23206945 is about 285.2370859847.

The spelling of 23206945 in words is "twenty-three million, two hundred six thousand, nine hundred forty-five".