13191980 has 24 divisors (see below), whose sum is σ = 28453488. Its totient is φ = 5133888.

The previous prime is 13191979. The next prime is 13191991. The reversal of 13191980 is 8919131.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8174 + ... + 9653.

It is an arithmetic number, because the mean of its divisors is an integer number (1185562).

Almost surely, 2^13191980 is an apocalyptic number.

13191980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13191980 is an abundant number, since it is smaller than the sum of its proper divisors (15261508).

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

13191980 is a wasteful number, since it uses less digits than its factorization.

13191980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17873 (or 17871 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 13191980 is about 3632.0765410437. The cubic root of 13191980 is about 236.2852769658.

The spelling of 13191980 in words is "thirteen million, one hundred ninety-one thousand, nine hundred eighty".