123643808 has 24 divisors (see below), whose sum is σ = 243891648. Its totient is φ = 61703104.

The previous prime is 123643801. The next prime is 123643829. The reversal of 123643808 is 808346321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123643801) 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, 14585 + ... + 21447.

It is an arithmetic number, because the mean of its divisors is an integer number (10162152).

Almost surely, 2^123643808 is an apocalyptic number.

It is an amenable number.

123643808 is a deficient number, since it is larger than the sum of its proper divisors (120247840).

123643808 is an equidigital number, since it uses as much as digits as its factorization.

123643808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7436 (or 7428 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 123643808 is about 11119.5237308079. The cubic root of 123643808 is about 498.1851647156.

The spelling of 123643808 in words is "one hundred twenty-three million, six hundred forty-three thousand, eight hundred eight".