26561568 has 48 divisors (see below), whose sum is σ = 76065696. Its totient is φ = 8048640.

The previous prime is 26561551. The next prime is 26561581. The reversal of 26561568 is 86516562.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11521 + ... + 13632.

It is an arithmetic number, because the mean of its divisors is an integer number (1584702).

Almost surely, 2^26561568 is an apocalyptic number.

It is an amenable number.

26561568 is an abundant number, since it is smaller than the sum of its proper divisors (49504128).

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

26561568 is a wasteful number, since it uses less digits than its factorization.

26561568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25177 (or 25169 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 26561568 is about 5153.7916139479. The cubic root of 26561568 is about 298.3673082898.

It can be divided in two parts, 2656 and 1568, that added together give a palindrome (4224).

The spelling of 26561568 in words is "twenty-six million, five hundred sixty-one thousand, five hundred sixty-eight".