23507345 has 8 divisors (see below), whose sum is σ = 29868264. Its totient is φ = 17699584.

The previous prime is 23507339. The next prime is 23507359. The reversal of 23507345 is 54370532.

It can be written as a sum of positive squares in 4 ways, for example, as 6235009 + 17272336 = 2497^2 + 4156^2 .

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

It is not a de Polignac number, because 23507345 - 2⁸ = 23507089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138194 + ... + 138363.

It is an arithmetic number, because the mean of its divisors is an integer number (3733533).

Almost surely, 2^23507345 is an apocalyptic number.

It is an amenable number.

23507345 is a deficient number, since it is larger than the sum of its proper divisors (6360919).

23507345 is a wasteful number, since it uses less digits than its factorization.

23507345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276579.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 23507345 is about 4848.4373771350. The cubic root of 23507345 is about 286.4625545104.

Adding to 23507345 its reverse (54370532), we get a palindrome (77877877).

It can be divided in two parts, 2350 and 7345, that multiplied together give a triangular number (17260750 = T₅₈₇₅).

The spelling of 23507345 in words is "twenty-three million, five hundred seven thousand, three hundred forty-five".