12145560 has 128 divisors (see below), whose sum is σ = 43891200. Its totient is φ = 2626560.

The previous prime is 12145537. The next prime is 12145561. The reversal of 12145560 is 6554121.

12145560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12145560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12145561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15580 + ... + 16340.

It is an arithmetic number, because the mean of its divisors is an integer number (342900).

Almost surely, 2^12145560 is an apocalyptic number.

12145560 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 12145560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21945600).

12145560 is an abundant number, since it is smaller than the sum of its proper divisors (31745640).

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

12145560 is a wasteful number, since it uses less digits than its factorization.

12145560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 12145560 is about 3485.0480627963. The cubic root of 12145560 is about 229.8648228998.

Adding to 12145560 its reverse (6554121), we get a palindrome (18699681).

The spelling of 12145560 in words is "twelve million, one hundred forty-five thousand, five hundred sixty".