26340881 has 6 divisors (see below), whose sum is σ = 30641490. Its totient is φ = 22577856.

The previous prime is 26340877. The next prime is 26340913. The reversal of 26340881 is 18804362.

It can be written as a sum of positive squares in only one way, i.e., 24840256 + 1500625 = 4984^2 + 1225^2 .

It is not a de Polignac number, because 26340881 - 2² = 26340877 is a prime.

It is a super-2 number, since 2×26340881² = 1387684023712322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26342881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268736 + ... + 268833.

It is an arithmetic number, because the mean of its divisors is an integer number (5106915).

Almost surely, 2^26340881 is an apocalyptic number.

It is an amenable number.

26340881 is a deficient number, since it is larger than the sum of its proper divisors (4300609).

26340881 is an equidigital number, since it uses as much as digits as its factorization.

26340881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537583 (or 537576 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 26340881 is about 5132.3367972104. The cubic root of 26340881 is about 297.5386800918.

The spelling of 26340881 in words is "twenty-six million, three hundred forty thousand, eight hundred eighty-one".