12355816 has 16 divisors (see below), whose sum is σ = 25273440. Its totient is φ = 5616240.

The previous prime is 12355813. The next prime is 12355823. The reversal of 12355816 is 61855321.

It is not an unprimeable number, because it can be changed into a prime (12355813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70116 + ... + 70291.

It is an arithmetic number, because the mean of its divisors is an integer number (1579590).

Almost surely, 2^12355816 is an apocalyptic number.

It is an amenable number.

12355816 is an abundant number, since it is smaller than the sum of its proper divisors (12917624).

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

12355816 is a wasteful number, since it uses less digits than its factorization.

12355816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140424 (or 140420 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 12355816 is about 3515.0840672735. The cubic root of 12355816 is about 231.1836648301.

The spelling of 12355816 in words is "twelve million, three hundred fifty-five thousand, eight hundred sixteen".