12780955 has 8 divisors (see below), whose sum is σ = 16731504. Its totient is φ = 9295200.

The previous prime is 12780949. The next prime is 12780973. The reversal of 12780955 is 55908721.

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

It is not a de Polignac number, because 12780955 - 2⁷ = 12780827 is a prime.

It is a Duffinian number.

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, 116136 + ... + 116245.

It is an arithmetic number, because the mean of its divisors is an integer number (2091438).

Almost surely, 2^12780955 is an apocalyptic number.

12780955 is a deficient number, since it is larger than the sum of its proper divisors (3950549).

12780955 is a wasteful number, since it uses less digits than its factorization.

12780955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232397.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 12780955 is about 3575.0461535482. The cubic root of 12780955 is about 233.8053449740.

The spelling of 12780955 in words is "twelve million, seven hundred eighty thousand, nine hundred fifty-five".