12866458 has 16 divisors (see below), whose sum is σ = 22163040. Its totient is φ = 5540400.

The previous prime is 12866423. The next prime is 12866461. The reversal of 12866458 is 85466821.

It is a self number, because there is not a number n which added to its sum of digits gives 12866458.

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, 14973 + ... + 15808.

It is an arithmetic number, because the mean of its divisors is an integer number (1385190).

Almost surely, 2^12866458 is an apocalyptic number.

12866458 is a deficient number, since it is larger than the sum of its proper divisors (9296582).

12866458 is a wasteful number, since it uses less digits than its factorization.

12866458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30813.

The product of its digits is 92160, while the sum is 40.

The square root of 12866458 is about 3586.9845274269. The cubic root of 12866458 is about 234.3255628588.

It can be divided in two parts, 1286 and 6458, that added together give a square (7744 = 88²).

The spelling of 12866458 in words is "twelve million, eight hundred sixty-six thousand, four hundred fifty-eight".