26028161 has 4 divisors (see below), whose sum is σ = 26044500. Its totient is φ = 26011824.

The previous prime is 26028091. The next prime is 26028169. The reversal of 26028161 is 16182062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23338561 + 2689600 = 4831^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 26028161 - 2¹⁸ = 25766017 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 26028161.

It is not an unprimeable number, because it can be changed into a prime (26028169) 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, 5486 + ... + 9063.

It is an arithmetic number, because the mean of its divisors is an integer number (6511125).

Almost surely, 2^26028161 is an apocalyptic number.

It is an amenable number.

26028161 is a deficient number, since it is larger than the sum of its proper divisors (16339).

26028161 is a wasteful number, since it uses less digits than its factorization.

26028161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16338.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 26028161 is about 5101.7801795060. The cubic root of 26028161 is about 296.3565257505.

The spelling of 26028161 in words is "twenty-six million, twenty-eight thousand, one hundred sixty-one".