26641385 has 4 divisors (see below), whose sum is σ = 31969668. Its totient is φ = 21313104.

The previous prime is 26641379. The next prime is 26641387. The reversal of 26641385 is 58314662.

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 17707264 + 8934121 = 4208^2 + 2989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26641385 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26641387) 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 3 ways as a sum of consecutive naturals, for example, 2664134 + ... + 2664143.

It is an arithmetic number, because the mean of its divisors is an integer number (7992417).

Almost surely, 2^26641385 is an apocalyptic number.

It is an amenable number.

26641385 is a deficient number, since it is larger than the sum of its proper divisors (5328283).

26641385 is an equidigital number, since it uses as much as digits as its factorization.

26641385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328282.

The product of its digits is 34560, while the sum is 35.

The square root of 26641385 is about 5161.5293276315. The cubic root of 26641385 is about 298.6658721003.

Subtracting from 26641385 its sum of digits (35), we obtain a triangular number (26641350 = T₇₂₉₉).

The spelling of 26641385 in words is "twenty-six million, six hundred forty-one thousand, three hundred eighty-five".