26131091 has 12 divisors (see below), whose sum is σ = 31726608. Its totient is φ = 21078912.

The previous prime is 26131081. The next prime is 26131093. The reversal of 26131091 is 19013162.

It is a happy number.

It is not a de Polignac number, because 26131091 - 2¹⁴ = 26114707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26131093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4436 + ... + 8481.

It is an arithmetic number, because the mean of its divisors is an integer number (2643884).

Almost surely, 2^26131091 is an apocalyptic number.

26131091 is a deficient number, since it is larger than the sum of its proper divisors (5595517).

26131091 is a wasteful number, since it uses less digits than its factorization.

26131091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12958 (or 12941 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 26131091 is about 5111.8578814361. The cubic root of 26131091 is about 296.7466654321.

The spelling of 26131091 in words is "twenty-six million, one hundred thirty-one thousand, ninety-one".