23609729 has 8 divisors (see below), whose sum is σ = 27737472. Its totient is φ = 19812240.

The previous prime is 23609713. The next prime is 23609743. The reversal of 23609729 is 92790632.

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

It is a cyclic number.

It is not a de Polignac number, because 23609729 - 2⁴ = 23609713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23609692 and 23609701.

It is not an unprimeable number, because it can be changed into a prime (23609779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82409 + ... + 82694.

It is an arithmetic number, because the mean of its divisors is an integer number (3467184).

Almost surely, 2^23609729 is an apocalyptic number.

It is an amenable number.

23609729 is a deficient number, since it is larger than the sum of its proper divisors (4127743).

23609729 is a wasteful number, since it uses less digits than its factorization.

23609729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165127.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 23609729 is about 4858.9843588964. The cubic root of 23609729 is about 286.8778389639.

The spelling of 23609729 in words is "twenty-three million, six hundred nine thousand, seven hundred twenty-nine".