12880449 has 6 divisors (see below), whose sum is σ = 18605106. Its totient is φ = 8586960.

The previous prime is 12880447. The next prime is 12880457. The reversal of 12880449 is 94408821.

It can be written as a sum of positive squares in only one way, i.e., 12852225 + 28224 = 3585^2 + 168^2 .

It is not a de Polignac number, because 12880449 - 2¹ = 12880447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12880447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 715572 + ... + 715589.

It is an arithmetic number, because the mean of its divisors is an integer number (3100851).

Almost surely, 2^12880449 is an apocalyptic number.

It is an amenable number.

12880449 is a deficient number, since it is larger than the sum of its proper divisors (5724657).

12880449 is a wasteful number, since it uses less digits than its factorization.

12880449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431167 (or 1431164 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 12880449 is about 3588.9342429195. The cubic root of 12880449 is about 234.4104673792.

The spelling of 12880449 in words is "twelve million, eight hundred eighty thousand, four hundred forty-nine".