12881896 has 8 divisors (see below), whose sum is σ = 24153570. Its totient is φ = 6440944.

The previous prime is 12881839. The next prime is 12881899. The reversal of 12881896 is 69818821.

12881896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12859396 + 22500 = 3586^2 + 150^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12881899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805111 + ... + 805126.

Almost surely, 2^12881896 is an apocalyptic number.

It is an amenable number.

12881896 is a deficient number, since it is larger than the sum of its proper divisors (11271674).

12881896 is a wasteful number, since it uses less digits than its factorization.

12881896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610243 (or 1610239 counting only the distinct ones).

The product of its digits is 55296, while the sum is 43.

The square root of 12881896 is about 3589.1358291377. The cubic root of 12881896 is about 234.4192450040.

The spelling of 12881896 in words is "twelve million, eight hundred eighty-one thousand, eight hundred ninety-six".