23002765 has 4 divisors (see below), whose sum is σ = 27603324. Its totient is φ = 18402208.

The previous prime is 23002729. The next prime is 23002781. The reversal of 23002765 is 56720032.

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 5076009 + 17926756 = 2253^2 + 4234^2 .

It is a cyclic number.

It is not a de Polignac number, because 23002765 - 2¹⁵ = 22969997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2300272 + ... + 2300281.

It is an arithmetic number, because the mean of its divisors is an integer number (6900831).

Almost surely, 2^23002765 is an apocalyptic number.

It is an amenable number.

23002765 is a deficient number, since it is larger than the sum of its proper divisors (4600559).

23002765 is an equidigital number, since it uses as much as digits as its factorization.

23002765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600558.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 23002765 is about 4796.1197858269. The cubic root of 23002765 is about 284.3980936042.

Adding to 23002765 its reverse (56720032), we get a palindrome (79722797).

The spelling of 23002765 in words is "twenty-three million, two thousand, seven hundred sixty-five".