26728217 has 8 divisors (see below), whose sum is σ = 27086400. Its totient is φ = 26372304.

The previous prime is 26728211. The next prime is 26728223. The reversal of 26728217 is 71282762.

It is an interprime number because it is at equal distance from previous prime (26728211) and next prime (26728223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26728217 - 2⁶ = 26728153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26728211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40988 + ... + 41634.

It is an arithmetic number, because the mean of its divisors is an integer number (3385800).

Almost surely, 2^26728217 is an apocalyptic number.

It is an amenable number.

26728217 is a deficient number, since it is larger than the sum of its proper divisors (358183).

26728217 is a wasteful number, since it uses less digits than its factorization.

26728217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135.

The product of its digits is 18816, while the sum is 35.

The square root of 26728217 is about 5169.9339454194. The cubic root of 26728217 is about 298.9899997774.

The spelling of 26728217 in words is "twenty-six million, seven hundred twenty-eight thousand, two hundred seventeen".