26820873 has 12 divisors (see below), whose sum is σ = 38831988. Its totient is φ = 17838720.

The previous prime is 26820851. The next prime is 26820881. The reversal of 26820873 is 37802862.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24088464 + 2732409 = 4908^2 + 1653^2 .

It is not a de Polignac number, because 26820873 - 2⁵ = 26820841 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (26820803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 853 + ... + 7373.

It is an arithmetic number, because the mean of its divisors is an integer number (3235999).

Almost surely, 2^26820873 is an apocalyptic number.

It is an amenable number.

26820873 is a deficient number, since it is larger than the sum of its proper divisors (12011115).

26820873 is a wasteful number, since it uses less digits than its factorization.

26820873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6984 (or 6981 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 26820873 is about 5178.8872356907. The cubic root of 26820873 is about 299.3350940892.

The spelling of 26820873 in words is "twenty-six million, eight hundred twenty thousand, eight hundred seventy-three".