12720195 has 12 divisors (see below), whose sum is σ = 22048416. Its totient is φ = 6784080.

The previous prime is 12720187. The next prime is 12720229. The reversal of 12720195 is 59102721.

12720195 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 12720195 - 2³ = 12720187 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141291 + ... + 141380.

It is an arithmetic number, because the mean of its divisors is an integer number (1837368).

Almost surely, 2^12720195 is an apocalyptic number.

12720195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12720195 is a deficient number, since it is larger than the sum of its proper divisors (9328221).

12720195 is a wasteful number, since it uses less digits than its factorization.

12720195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282682 (or 282679 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 12720195 is about 3566.5382375631. The cubic root of 12720195 is about 233.4342567949.

The spelling of 12720195 in words is "twelve million, seven hundred twenty thousand, one hundred ninety-five".