26971137 has 20 divisors (see below), whose sum is σ = 40435780. Its totient is φ = 17915904.

The previous prime is 26971123. The next prime is 26971159. The reversal of 26971137 is 73117962.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6395841 + 20575296 = 2529^2 + 4536^2 .

It is not a de Polignac number, because 26971137 - 2¹⁶ = 26905601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26973137) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34689 + ... + 35457.

It is an arithmetic number, because the mean of its divisors is an integer number (2021789).

Almost surely, 2^26971137 is an apocalyptic number.

26971137 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

26971137 is a deficient number, since it is larger than the sum of its proper divisors (13464643).

26971137 is an equidigital number, since it uses as much as digits as its factorization.

26971137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1205 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 26971137 is about 5193.3743365947. The cubic root of 26971137 is about 299.8930618853.

The spelling of 26971137 in words is "twenty-six million, nine hundred seventy-one thousand, one hundred thirty-seven".