26131887 has 12 divisors (see below), whose sum is σ = 39387504. Its totient is φ = 16663680.

The previous prime is 26131849. The next prime is 26131927. The reversal of 26131887 is 78813162.

26131887 is a `hidden beast` number, since 261 + 318 + 87 = 666.

It is not a de Polignac number, because 26131887 - 2⁷ = 26131759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26131817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62914 + ... + 63327.

It is an arithmetic number, because the mean of its divisors is an integer number (3282292).

Almost surely, 2^26131887 is an apocalyptic number.

26131887 is a deficient number, since it is larger than the sum of its proper divisors (13255617).

26131887 is a wasteful number, since it uses less digits than its factorization.

26131887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126270 (or 126267 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 26131887 is about 5111.9357390327. The cubic root of 26131887 is about 296.7496785471.

The spelling of 26131887 in words is "twenty-six million, one hundred thirty-one thousand, eight hundred eighty-seven".