12355812 has 36 divisors (see below), whose sum is σ = 35695296. Its totient is φ = 3530160.

The previous prime is 12355799. The next prime is 12355813. The reversal of 12355812 is 21855321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 24264 + ... + 24767.

It is an arithmetic number, because the mean of its divisors is an integer number (991536).

Almost surely, 2^12355812 is an apocalyptic number.

12355812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12355812 is an abundant number, since it is smaller than the sum of its proper divisors (23339484).

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

12355812 is a wasteful number, since it uses less digits than its factorization.

12355812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49048 (or 49043 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 12355812 is about 3515.0834982970. The cubic root of 12355812 is about 231.1836398827.

The spelling of 12355812 in words is "twelve million, three hundred fifty-five thousand, eight hundred twelve".