12780195 has 8 divisors (see below), whose sum is σ = 20448336. Its totient is φ = 6816096.

The previous prime is 12780181. The next prime is 12780197. The reversal of 12780195 is 59108721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12780195 - 2⁸ = 12779939 is a prime.

It is a super-6 number, since 6×12780195⁶ (a number of 44 digits) contains 666666 as substring.

It is not an unprimeable number, because it can be changed into a prime (12780197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425992 + ... + 426021.

It is an arithmetic number, because the mean of its divisors is an integer number (2556042).

Almost surely, 2^12780195 is an apocalyptic number.

12780195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12780195 is a deficient number, since it is larger than the sum of its proper divisors (7668141).

12780195 is an equidigital number, since it uses as much as digits as its factorization.

12780195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852021.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 12780195 is about 3574.9398596340. The cubic root of 12780195 is about 233.8007105894.

The spelling of 12780195 in words is "twelve million, seven hundred eighty thousand, one hundred ninety-five".