26131812 has 48 divisors (see below), whose sum is σ = 71178240. Its totient is φ = 7306272.

The previous prime is 26131811. The next prime is 26131817. The reversal of 26131812 is 21813162.

It is not an unprimeable number, because it can be changed into a prime (26131811) 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, 639 + ... + 7257.

It is an arithmetic number, because the mean of its divisors is an integer number (1482880).

Almost surely, 2^26131812 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 26131812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35589120).

26131812 is an abundant number, since it is smaller than the sum of its proper divisors (45046428).

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

26131812 is a wasteful number, since it uses less digits than its factorization.

26131812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680 (or 6678 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 26131812 is about 5111.9284032545. The cubic root of 26131812 is about 296.7493946507.

Adding to 26131812 its reverse (21813162), we get a palindrome (47944974).

The spelling of 26131812 in words is "twenty-six million, one hundred thirty-one thousand, eight hundred twelve".