26861855 has 4 divisors (see below), whose sum is σ = 32234232. Its totient is φ = 21489480.

The previous prime is 26861833. The next prime is 26861867. The reversal of 26861855 is 55816862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55816862 = 2 ⋅27908431.

It is not a de Polignac number, because 26861855 - 2⁸ = 26861599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2686181 + ... + 2686190.

It is an arithmetic number, because the mean of its divisors is an integer number (8058558).

Almost surely, 2^26861855 is an apocalyptic number.

26861855 is a deficient number, since it is larger than the sum of its proper divisors (5372377).

26861855 is an equidigital number, since it uses as much as digits as its factorization.

26861855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5372376.

The product of its digits is 115200, while the sum is 41.

The square root of 26861855 is about 5182.8423668871. The cubic root of 26861855 is about 299.4874767502.

The spelling of 26861855 in words is "twenty-six million, eight hundred sixty-one thousand, eight hundred fifty-five".