26897945 has 8 divisors (see below), whose sum is σ = 32720136. Its totient is φ = 21223296.

The previous prime is 26897933. The next prime is 26897947. The reversal of 26897945 is 54979862.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2027776 + 24870169 = 1424^2 + 4987^2 .

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 26897945 - 2⁴ = 26897929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26897893 and 26897902.

It is not an unprimeable number, because it can be changed into a prime (26897947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36482 + ... + 37211.

It is an arithmetic number, because the mean of its divisors is an integer number (4090017).

Almost surely, 2^26897945 is an apocalyptic number.

It is an amenable number.

26897945 is a deficient number, since it is larger than the sum of its proper divisors (5822191).

26897945 is an equidigital number, since it uses as much as digits as its factorization.

26897945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73771.

The product of its digits is 1088640, while the sum is 50.

The square root of 26897945 is about 5186.3228784949. The cubic root of 26897945 is about 299.6215412826.

The spelling of 26897945 in words is "twenty-six million, eight hundred ninety-seven thousand, nine hundred forty-five".