12689830 has 32 divisors (see below), whose sum is σ = 23623488. Its totient is φ = 4905600.

The previous prime is 12689821. The next prime is 12689857. The reversal of 12689830 is 3898621.

It is a super-2 number, since 2×12689830² = 322063570857800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12689830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43164 + ... + 43456.

It is an arithmetic number, because the mean of its divisors is an integer number (738234).

Almost surely, 2^12689830 is an apocalyptic number.

12689830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12689830 is a deficient number, since it is larger than the sum of its proper divisors (10933658).

12689830 is a wasteful number, since it uses less digits than its factorization.

12689830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 12689830 is about 3562.2787650604. The cubic root of 12689830 is about 233.2483613501.

The spelling of 12689830 in words is "twelve million, six hundred eighty-nine thousand, eight hundred thirty".