26955981 has 12 divisors (see below), whose sum is σ = 41931708. Its totient is φ = 16588224.

The previous prime is 26955967. The next prime is 26955989. The reversal of 26955981 is 18955962.

It can be written as a sum of positive squares in 2 ways, for example, as 3481956 + 23474025 = 1866^2 + 4845^2 .

It is not a de Polignac number, because 26955981 - 2⁵ = 26955949 is a prime.

It is a super-2 number, since 2×26955981² = 1453249823344722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26955989) 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 11 ways as a sum of consecutive naturals, for example, 115080 + ... + 115313.

It is an arithmetic number, because the mean of its divisors is an integer number (3494309).

Almost surely, 2^26955981 is an apocalyptic number.

It is an amenable number.

26955981 is a deficient number, since it is larger than the sum of its proper divisors (14975727).

26955981 is a wasteful number, since it uses less digits than its factorization.

26955981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230412 (or 230409 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 26955981 is about 5191.9149646349. The cubic root of 26955981 is about 299.8368779868.

The spelling of 26955981 in words is "twenty-six million, nine hundred fifty-five thousand, nine hundred eighty-one".