23000145 has 32 divisors (see below), whose sum is σ = 42861312. Its totient is φ = 10313472.

The previous prime is 23000137. The next prime is 23000189. The reversal of 23000145 is 54100032.

It is not a de Polignac number, because 23000145 - 2³ = 23000137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3499 + ... + 7631.

It is an arithmetic number, because the mean of its divisors is an integer number (1339416).

Almost surely, 2^23000145 is an apocalyptic number.

It is an amenable number.

23000145 is a deficient number, since it is larger than the sum of its proper divisors (19861167).

23000145 is a wasteful number, since it uses less digits than its factorization.

23000145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4201.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 23000145 is about 4795.8466405839. The cubic root of 23000145 is about 284.3872956081.

Adding to 23000145 its reverse (54100032), we get a palindrome (77100177).

The spelling of 23000145 in words is "twenty-three million, one hundred forty-five", and thus it is an aban number.