26881345 has 4 divisors (see below), whose sum is σ = 32257620. Its totient is φ = 21505072.

The previous prime is 26881343. The next prime is 26881357. The reversal of 26881345 is 54318862.

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 14930496 + 11950849 = 3864^2 + 3457^2 .

It is a cyclic number.

It is not a de Polignac number, because 26881345 - 2¹ = 26881343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26881343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2688130 + ... + 2688139.

It is an arithmetic number, because the mean of its divisors is an integer number (8064405).

Almost surely, 2^26881345 is an apocalyptic number.

It is an amenable number.

26881345 is a deficient number, since it is larger than the sum of its proper divisors (5376275).

26881345 is an equidigital number, since it uses as much as digits as its factorization.

26881345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376274.

The product of its digits is 46080, while the sum is 37.

The square root of 26881345 is about 5184.7222683573. The cubic root of 26881345 is about 299.5598917017.

The spelling of 26881345 in words is "twenty-six million, eight hundred eighty-one thousand, three hundred forty-five".