12205992 has 16 divisors (see below), whose sum is σ = 30515040. Its totient is φ = 4068656.

The previous prime is 12205981. The next prime is 12206021. The reversal of 12205992 is 29950221.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254268 + ... + 254315.

It is an arithmetic number, because the mean of its divisors is an integer number (1907190).

Almost surely, 2^12205992 is an apocalyptic number.

12205992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12205992 is an abundant number, since it is smaller than the sum of its proper divisors (18309048).

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

12205992 is a wasteful number, since it uses less digits than its factorization.

12205992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508592 (or 508588 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 12205992 is about 3493.7074863245. The cubic root of 12205992 is about 230.2454342848.

The spelling of 12205992 in words is "twelve million, two hundred five thousand, nine hundred ninety-two".