26828881 has 4 divisors (see below), whose sum is σ = 26882100. Its totient is φ = 26775664.

The previous prime is 26828849. The next prime is 26828899. The reversal of 26828881 is 18882862.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10182481 + 16646400 = 3191^2 + 4080^2 .

It is a cyclic number.

It is not a de Polignac number, because 26828881 - 2⁵ = 26828849 is a prime.

It is a super-3 number, since 3×26828881³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26828381) 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, 25846 + ... + 26863.

It is an arithmetic number, because the mean of its divisors is an integer number (6720525).

Almost surely, 2^26828881 is an apocalyptic number.

It is an amenable number.

26828881 is a deficient number, since it is larger than the sum of its proper divisors (53219).

26828881 is an equidigital number, since it uses as much as digits as its factorization.

26828881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53218.

The product of its digits is 98304, while the sum is 43.

The square root of 26828881 is about 5179.6603170478. The cubic root of 26828881 is about 299.3648822931.

The spelling of 26828881 in words is "twenty-six million, eight hundred twenty-eight thousand, eight hundred eighty-one".