12780670 has 24 divisors (see below), whose sum is σ = 26762184. Its totient is φ = 4381776.

The previous prime is 12780661. The next prime is 12780689. The reversal of 12780670 is 7608721.

It is a happy number.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 12552 + ... + 13531.

It is an arithmetic number, because the mean of its divisors is an integer number (1115091).

Almost surely, 2^12780670 is an apocalyptic number.

12780670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12780670 is an abundant number, since it is smaller than the sum of its proper divisors (13981514).

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

12780670 is a wasteful number, since it uses less digits than its factorization.

12780670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26104 (or 26097 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 12780670 is about 3575.0062937008. The cubic root of 12780670 is about 233.8036071013.

The spelling of 12780670 in words is "twelve million, seven hundred eighty thousand, six hundred seventy".