26853381 has 6 divisors (see below), whose sum is σ = 38788230. Its totient is φ = 17902248.

The previous prime is 26853377. The next prime is 26853427. The reversal of 26853381 is 18335862.

It can be written as a sum of positive squares in only one way, i.e., 25250625 + 1602756 = 5025^2 + 1266^2 .

It is not a de Polignac number, because 26853381 - 2² = 26853377 is a prime.

It is a super-2 number, since 2×26853381² = 1442208142262322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26853311) 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, 1491846 + ... + 1491863.

It is an arithmetic number, because the mean of its divisors is an integer number (6464705).

Almost surely, 2^26853381 is an apocalyptic number.

It is an amenable number.

26853381 is a deficient number, since it is larger than the sum of its proper divisors (11934849).

26853381 is a wasteful number, since it uses less digits than its factorization.

26853381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983715 (or 2983712 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 26853381 is about 5182.0247973162. The cubic root of 26853381 is about 299.4559807398.

The spelling of 26853381 in words is "twenty-six million, eight hundred fifty-three thousand, three hundred eighty-one".