12145588 has 48 divisors (see below), whose sum is σ = 26637184. Its totient is φ = 4717440.

The previous prime is 12145571. The next prime is 12145589. The reversal of 12145588 is 88554121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12145589) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21931 + ... + 22477.

Almost surely, 2^12145588 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12145588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13318592).

12145588 is an abundant number, since it is smaller than the sum of its proper divisors (14491596).

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

12145588 is a wasteful number, since it uses less digits than its factorization.

12145588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632 (or 630 counting only the distinct ones).

The product of its digits is 12800, while the sum is 34.

The square root of 12145588 is about 3485.0520799552. The cubic root of 12145588 is about 229.8649995408.

The spelling of 12145588 in words is "twelve million, one hundred forty-five thousand, five hundred eighty-eight".