26561412 has 144 divisors (see below), whose sum is σ = 78395520. Its totient is φ = 7755264.

The previous prime is 26561407. The next prime is 26561453. The reversal of 26561412 is 21416562.

26561412 is a `hidden beast` number, since 2 + 656 + 1 + 4 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 47 ways as a sum of consecutive naturals, for example, 717858 + ... + 717894.

Almost surely, 2^26561412 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 26561412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39197760).

26561412 is an abundant number, since it is smaller than the sum of its proper divisors (51834108).

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

26561412 is a wasteful number, since it uses less digits than its factorization.

26561412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 82 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 26561412 is about 5153.7764794372. The cubic root of 26561412 is about 298.3667241703.

Adding to 26561412 its reverse (21416562), we get a palindrome (47977974).

The spelling of 26561412 in words is "twenty-six million, five hundred sixty-one thousand, four hundred twelve".