23690345 has 16 divisors (see below), whose sum is σ = 33903360. Its totient is φ = 15537984.

The previous prime is 23690341. The next prime is 23690347. The reversal of 23690345 is 54309632.

It is not a de Polignac number, because 23690345 - 2² = 23690341 is a prime.

It is a super-2 number, since 2×23690345² = 1122464892438050, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23690341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13910 + ... + 15519.

It is an arithmetic number, because the mean of its divisors is an integer number (2118960).

Almost surely, 2^23690345 is an apocalyptic number.

It is an amenable number.

23690345 is a deficient number, since it is larger than the sum of its proper divisors (10213015).

23690345 is a wasteful number, since it uses less digits than its factorization.

23690345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29464.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 23690345 is about 4867.2728503752. The cubic root of 23690345 is about 287.2039851778.

Adding to 23690345 its reverse (54309632), we get a palindrome (77999977).

The spelling of 23690345 in words is "twenty-three million, six hundred ninety thousand, three hundred forty-five".