26081904 has 80 divisors (see below), whose sum is σ = 71557920. Its totient is φ = 8171520.

The previous prime is 26081903. The next prime is 26081941. The reversal of 26081904 is 40918062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26081903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56844 + ... + 57300.

It is an arithmetic number, because the mean of its divisors is an integer number (894474).

Almost surely, 2^26081904 is an apocalyptic number.

26081904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26081904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35778960).

26081904 is an abundant number, since it is smaller than the sum of its proper divisors (45476016).

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

26081904 is a wasteful number, since it uses less digits than its factorization.

26081904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 26081904 is about 5107.0445465063. The cubic root of 26081904 is about 296.5603580436.

Adding to 26081904 its reverse (40918062), we get a palindrome (66999966).

The spelling of 26081904 in words is "twenty-six million, eighty-one thousand, nine hundred four".