26863956 has 108 divisors (see below), whose sum is σ = 80315508. Its totient is φ = 7547904.

The previous prime is 26863943. The next prime is 26863987. The reversal of 26863956 is 65936862.

It is a happy number.

26863956 is a `hidden beast` number, since 2 + 6 + 8 + 639 + 5 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9922500 + 16941456 = 3150^2 + 4116^2 .

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 171030 + ... + 171186.

Almost surely, 2^26863956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26863956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40157754).

26863956 is an abundant number, since it is smaller than the sum of its proper divisors (53451552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26863956 is a wasteful number, since it uses less digits than its factorization.

26863956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 266 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 26863956 is about 5183.0450509329. The cubic root of 26863956 is about 299.4952846844.

The spelling of 26863956 in words is "twenty-six million, eight hundred sixty-three thousand, nine hundred fifty-six".