26131969 has 8 divisors (see below), whose sum is σ = 26550720. Its totient is φ = 25715856.

The previous prime is 26131949. The next prime is 26131981. The reversal of 26131969 is 96913162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26131969 - 2¹³ = 26123777 is a prime.

It is a super-2 number, since 2×26131969² = 1365759607633922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26131949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29359 + ... + 30235.

It is an arithmetic number, because the mean of its divisors is an integer number (3318840).

Almost surely, 2^26131969 is an apocalyptic number.

It is an amenable number.

26131969 is a deficient number, since it is larger than the sum of its proper divisors (418751).

26131969 is an equidigital number, since it uses as much as digits as its factorization.

26131969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319.

The product of its digits is 17496, while the sum is 37.

The square root of 26131969 is about 5111.9437594715. The cubic root of 26131969 is about 296.7499889399.

The spelling of 26131969 in words is "twenty-six million, one hundred thirty-one thousand, nine hundred sixty-nine".