13212560 has 40 divisors (see below), whose sum is σ = 30875256. Its totient is φ = 5258240.

The previous prime is 13212547. The next prime is 13212599. The reversal of 13212560 is 6521231.

It can be written as a sum of positive squares in 4 ways, for example, as 50176 + 13162384 = 224^2 + 3628^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25100 + ... + 25620.

Almost surely, 2^13212560 is an apocalyptic number.

13212560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13212560 is an abundant number, since it is smaller than the sum of its proper divisors (17662696).

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

13212560 is a wasteful number, since it uses less digits than its factorization.

13212560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 13212560 is about 3634.9085270471. The cubic root of 13212560 is about 236.4080845225.

Adding to 13212560 its reverse (6521231), we get a palindrome (19733791).

The spelling of 13212560 in words is "thirteen million, two hundred twelve thousand, five hundred sixty".