26681568 has 48 divisors (see below), whose sum is σ = 74163600. Its totient is φ = 8370176.

The previous prime is 26681563. The next prime is 26681581. The reversal of 26681568 is 86518662.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26681563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6543 + ... + 9806.

It is an arithmetic number, because the mean of its divisors is an integer number (1545075).

Almost surely, 2^26681568 is an apocalyptic number.

It is an amenable number.

26681568 is an abundant number, since it is smaller than the sum of its proper divisors (47482032).

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

26681568 is a wasteful number, since it uses less digits than its factorization.

26681568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16379 (or 16371 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 26681568 is about 5165.4204088341. The cubic root of 26681568 is about 298.8159551631.

The spelling of 26681568 in words is "twenty-six million, six hundred eighty-one thousand, five hundred sixty-eight".