23320145 has 8 divisors (see below), whose sum is σ = 28131840. Its totient is φ = 18557680.

The previous prime is 23320133. The next prime is 23320151. The reversal of 23320145 is 54102332.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23320145 - 2²⁴ = 6542929 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11255 + ... + 13164.

It is an arithmetic number, because the mean of its divisors is an integer number (3516480).

Almost surely, 2^23320145 is an apocalyptic number.

It is an amenable number.

23320145 is a deficient number, since it is larger than the sum of its proper divisors (4811695).

23320145 is a wasteful number, since it uses less digits than its factorization.

23320145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24615.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 23320145 is about 4829.0936002525. The cubic root of 23320145 is about 285.7001151901.

Adding to 23320145 its reverse (54102332), we get a palindrome (77422477).

The spelling of 23320145 in words is "twenty-three million, three hundred twenty thousand, one hundred forty-five".