26681886 has 192 divisors, whose sum is σ = 80510976. Its totient is φ = 6415200.

The previous prime is 26681881. The next prime is 26681903. The reversal of 26681886 is 68818662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26681881) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 860691 + ... + 860721.

It is an arithmetic number, because the mean of its divisors is an integer number (419328).

Almost surely, 2^26681886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26681886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40255488).

26681886 is an abundant number, since it is smaller than the sum of its proper divisors (53829090).

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

26681886 is a wasteful number, since it uses less digits than its factorization.

26681886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 77 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 26681886 is about 5165.4511903608. The cubic root of 26681886 is about 298.8171422884.

It can be divided in two parts, 2668 and 1886, that added together give a palindrome (4554).

The spelling of 26681886 in words is "twenty-six million, six hundred eighty-one thousand, eight hundred eighty-six".