23505406 has 8 divisors (see below), whose sum is σ = 35278704. Its totient is φ = 11745840.

The previous prime is 23505403. The next prime is 23505431. The reversal of 23505406 is 60450532.

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

It is a super-2 number, since 2×23505406² = 1105008222449672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23505403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4746 + ... + 8338.

It is an arithmetic number, because the mean of its divisors is an integer number (4409838).

Almost surely, 2^23505406 is an apocalyptic number.

23505406 is a deficient number, since it is larger than the sum of its proper divisors (11773298).

23505406 is a wasteful number, since it uses less digits than its factorization.

23505406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6866.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 23505406 is about 4848.2374116786. The cubic root of 23505406 is about 286.4546780195.

Adding to 23505406 its reverse (60450532), we get a palindrome (83955938).

The spelling of 23505406 in words is "twenty-three million, five hundred five thousand, four hundred six".