23540069 has 16 divisors (see below), whose sum is σ = 28454400. Its totient is φ = 19023984.

The previous prime is 23540059. The next prime is 23540071. The reversal of 23540069 is 96004532.

It is a de Polignac number, because none of the positive numbers 2^k-23540069 is a prime.

It is a super-2 number, since 2×23540069² = 1108269697049522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23540009) 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 15 ways as a sum of consecutive naturals, for example, 50174 + ... + 50640.

It is an arithmetic number, because the mean of its divisors is an integer number (1778400).

Almost surely, 2^23540069 is an apocalyptic number.

It is an amenable number.

23540069 is a deficient number, since it is larger than the sum of its proper divisors (4914331).

23540069 is a wasteful number, since it uses less digits than its factorization.

23540069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 23540069 is about 4851.8108990355. The cubic root of 23540069 is about 286.5954187156.

It can be divided in two parts, 235 and 40069, that added together give a palindrome (40304).

The spelling of 23540069 in words is "twenty-three million, five hundred forty thousand, sixty-nine".