26820071 has 4 divisors (see below), whose sum is σ = 26856912. Its totient is φ = 26783232.

The previous prime is 26820019. The next prime is 26820097. The reversal of 26820071 is 17002862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17002862 = 2 ⋅8501431.

It is a cyclic number.

It is not a de Polignac number, because 26820071 - 2⁶ = 26820007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26820071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26826071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17306 + ... + 18791.

It is an arithmetic number, because the mean of its divisors is an integer number (6714228).

Almost surely, 2^26820071 is an apocalyptic number.

26820071 is a deficient number, since it is larger than the sum of its proper divisors (36841).

26820071 is an equidigital number, since it uses as much as digits as its factorization.

26820071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36840.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 26820071 is about 5178.8098053510. The cubic root of 26820071 is about 299.3321104784.

The spelling of 26820071 in words is "twenty-six million, eight hundred twenty thousand, seventy-one".