23308506 has 32 divisors (see below), whose sum is σ = 55782720. Its totient is φ = 7171632.

The previous prime is 23308471. The next prime is 23308529. The reversal of 23308506 is 60580332.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 23308506.

It is an unprimeable number.

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, 15900 + ... + 17303.

It is an arithmetic number, because the mean of its divisors is an integer number (1743210).

Almost surely, 2^23308506 is an apocalyptic number.

23308506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

23308506 is an abundant number, since it is smaller than the sum of its proper divisors (32474214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23308506 is a wasteful number, since it uses less digits than its factorization.

23308506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33227 (or 33221 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 23308506 is about 4827.8883582784. Note that the first 3 decimals coincide. The cubic root of 23308506 is about 285.6525766491.

Adding to 23308506 its reverse (60580332), we get a palindrome (83888838).

The spelling of 23308506 in words is "twenty-three million, three hundred eight thousand, five hundred six".