12858538 has 16 divisors (see below), whose sum is σ = 24047424. Its totient is φ = 5009760.

The previous prime is 12858533. The next prime is 12858553. The reversal of 12858538 is 83585821.

It is a self number, because there is not a number n which added to its sum of digits gives 12858538.

It is not an unprimeable number, because it can be changed into a prime (12858533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41595 + ... + 41902.

It is an arithmetic number, because the mean of its divisors is an integer number (1502964).

Almost surely, 2^12858538 is an apocalyptic number.

12858538 is a deficient number, since it is larger than the sum of its proper divisors (11188886).

12858538 is a wasteful number, since it uses less digits than its factorization.

12858538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83517.

The product of its digits is 76800, while the sum is 40.

The square root of 12858538 is about 3585.8803661026. The cubic root of 12858538 is about 234.2774729757.

The spelling of 12858538 in words is "twelve million, eight hundred fifty-eight thousand, five hundred thirty-eight".