12289650 has 24 divisors (see below), whose sum is σ = 30478704. Its totient is φ = 3277200.

The previous prime is 12289639. The next prime is 12289679. The reversal of 12289650 is 5698221.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40816 + ... + 41115.

It is an arithmetic number, because the mean of its divisors is an integer number (1269946).

Almost surely, 2^12289650 is an apocalyptic number.

12289650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12289650 is an abundant number, since it is smaller than the sum of its proper divisors (18189054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12289650 is a wasteful number, since it uses less digits than its factorization.

12289650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81946 (or 81941 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 12289650 is about 3505.6597096695. The cubic root of 12289650 is about 230.7702593971.

It can be divided in two parts, 1228 and 9650, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 12289650 in words is "twelve million, two hundred eighty-nine thousand, six hundred fifty".