12589540 has 24 divisors (see below), whose sum is σ = 27054720. Its totient is φ = 4918368.

The previous prime is 12589531. The next prime is 12589543. The reversal of 12589540 is 4598521.

It is a junction number, because it is equal to n+sod(n) for n = 12589496 and 12589505.

It is not an unprimeable number, because it can be changed into a prime (12589543) 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, 6460 + ... + 8179.

It is an arithmetic number, because the mean of its divisors is an integer number (1127280).

Almost surely, 2^12589540 is an apocalyptic number.

12589540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12589540 is an abundant number, since it is smaller than the sum of its proper divisors (14465180).

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

12589540 is a wasteful number, since it uses less digits than its factorization.

12589540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14691 (or 14689 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 12589540 is about 3548.1741783627. The cubic root of 12589540 is about 232.6322675924.

The spelling of 12589540 in words is "twelve million, five hundred eighty-nine thousand, five hundred forty".