26880817 has 4 divisors (see below), whose sum is σ = 27127540. Its totient is φ = 26634096.

The previous prime is 26880811. The next prime is 26880827. The reversal of 26880817 is 71808862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71808862 = 2 ⋅35904431.

It can be written as a sum of positive squares in 2 ways, for example, as 9541921 + 17338896 = 3089^2 + 4164^2 .

It is a cyclic number.

It is not a de Polignac number, because 26880817 - 2¹¹ = 26878769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26880817.

It is not an unprimeable number, because it can be changed into a prime (26880811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123198 + ... + 123415.

It is an arithmetic number, because the mean of its divisors is an integer number (6781885).

Almost surely, 2^26880817 is an apocalyptic number.

It is an amenable number.

26880817 is a deficient number, since it is larger than the sum of its proper divisors (246723).

26880817 is a wasteful number, since it uses less digits than its factorization.

26880817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246722.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 26880817 is about 5184.6713492757. The cubic root of 26880817 is about 299.5579303830.

The spelling of 26880817 in words is "twenty-six million, eight hundred eighty thousand, eight hundred seventeen".