12177980 has 12 divisors (see below), whose sum is σ = 25573800. Its totient is φ = 4871184.

The previous prime is 12177973. The next prime is 12177983. The reversal of 12177980 is 8977121.

It is a self number, because there is not a number n which added to its sum of digits gives 12177980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12177983) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 304430 + ... + 304469.

It is an arithmetic number, because the mean of its divisors is an integer number (2131150).

Almost surely, 2^12177980 is an apocalyptic number.

12177980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12177980 is an abundant number, since it is smaller than the sum of its proper divisors (13395820).

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

12177980 is a wasteful number, since it uses less digits than its factorization.

12177980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608908 (or 608906 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 12177980 is about 3489.6962618543. The cubic root of 12177980 is about 230.0691663435.

The spelling of 12177980 in words is "twelve million, one hundred seventy-seven thousand, nine hundred eighty".