23709345 has 24 divisors (see below), whose sum is σ = 41700288. Its totient is φ = 11494560.

The previous prime is 23709319. The next prime is 23709349. The reversal of 23709345 is 54390732.

It is a happy number.

It is not a de Polignac number, because 23709345 - 2¹⁵ = 23676577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23709349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4717 + ... + 8346.

It is an arithmetic number, because the mean of its divisors is an integer number (1737512).

Almost surely, 2^23709345 is an apocalyptic number.

It is an amenable number.

23709345 is a deficient number, since it is larger than the sum of its proper divisors (17990943).

23709345 is a wasteful number, since it uses less digits than its factorization.

23709345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13093 (or 13082 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 23709345 is about 4869.2242708670. The cubic root of 23709345 is about 287.2807452467.

The spelling of 23709345 in words is "twenty-three million, seven hundred nine thousand, three hundred forty-five".