23217629 has 4 divisors (see below), whose sum is σ = 23457084. Its totient is φ = 22978176.

The previous prime is 23217619. The next prime is 23217683. The reversal of 23217629 is 92671232.

It is a happy number.

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 12945604 + 10272025 = 3598^2 + 3205^2 .

It is a cyclic number.

It is not a de Polignac number, because 23217629 - 2¹⁶ = 23152093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23217595 and 23217604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23217619) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 119582 + ... + 119775.

It is an arithmetic number, because the mean of its divisors is an integer number (5864271).

Almost surely, 2^23217629 is an apocalyptic number.

It is an amenable number.

23217629 is a deficient number, since it is larger than the sum of its proper divisors (239455).

23217629 is an equidigital number, since it uses as much as digits as its factorization.

23217629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239454.

The product of its digits is 9072, while the sum is 32.

The square root of 23217629 is about 4818.4674949614. The cubic root of 23217629 is about 285.2808516977.

The spelling of 23217629 in words is "twenty-three million, two hundred seventeen thousand, six hundred twenty-nine".