12985858 has 8 divisors (see below), whose sum is σ = 20624652. Its totient is φ = 6110976.

The previous prime is 12985801. The next prime is 12985867. The reversal of 12985858 is 85858921.

It can be written as a sum of positive squares in 2 ways, for example, as 11812969 + 1172889 = 3437^2 + 1083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190935 + ... + 191002.

Almost surely, 2^12985858 is an apocalyptic number.

12985858 is a deficient number, since it is larger than the sum of its proper divisors (7638794).

12985858 is a wasteful number, since it uses less digits than its factorization.

12985858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381956.

The product of its digits is 230400, while the sum is 46.

The square root of 12985858 is about 3603.5895992746. The cubic root of 12985858 is about 235.0481748225.

The spelling of 12985858 in words is "twelve million, nine hundred eighty-five thousand, eight hundred fifty-eight".