12989430 has 32 divisors (see below), whose sum is σ = 34639200. Its totient is φ = 3463776.

The previous prime is 12989429. The next prime is 12989441. The reversal of 12989430 is 3498921.

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

It is a Curzon number.

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, 23785 + ... + 24324.

It is an arithmetic number, because the mean of its divisors is an integer number (1082475).

Almost surely, 2^12989430 is an apocalyptic number.

12989430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12989430 is an abundant number, since it is smaller than the sum of its proper divisors (21649770).

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

12989430 is a wasteful number, since it uses less digits than its factorization.

12989430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48125 (or 48119 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 12989430 is about 3604.0851821232. The cubic root of 12989430 is about 235.0697242935.

The spelling of 12989430 in words is "twelve million, nine hundred eighty-nine thousand, four hundred thirty".