12689460 has 144 divisors (see below), whose sum is σ = 45741696. Its totient is φ = 2892672.

The previous prime is 12689423. The next prime is 12689477. The reversal of 12689460 is 6498621.

It is a super-2 number, since 2×12689460² = 322044790183200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33834 + ... + 34206.

Almost surely, 2^12689460 is an apocalyptic number.

12689460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12689460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22870848).

12689460 is an abundant number, since it is smaller than the sum of its proper divisors (33052236).

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

12689460 is a wasteful number, since it uses less digits than its factorization.

12689460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 12689460 is about 3562.2268316321. The cubic root of 12689460 is about 233.2460943712.

The spelling of 12689460 in words is "twelve million, six hundred eighty-nine thousand, four hundred sixty".