12880357 has 4 divisors (see below), whose sum is σ = 14720416. Its totient is φ = 11040300.

The previous prime is 12880337. The next prime is 12880393. The reversal of 12880357 is 75308821.

12880357 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12880357 - 2¹⁵ = 12847589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12880337) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 920019 + ... + 920032.

It is an arithmetic number, because the mean of its divisors is an integer number (3680104).

Almost surely, 2^12880357 is an apocalyptic number.

It is an amenable number.

12880357 is a deficient number, since it is larger than the sum of its proper divisors (1840059).

12880357 is an equidigital number, since it uses as much as digits as its factorization.

12880357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840058.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 12880357 is about 3588.9214257211. The cubic root of 12880357 is about 234.4099092772.

The spelling of 12880357 in words is "twelve million, eight hundred eighty thousand, three hundred fifty-seven".