26828681 has 8 divisors (see below), whose sum is σ = 29890944. Its totient is φ = 23870320.

The previous prime is 26828651. The next prime is 26828701. The reversal of 26828681 is 18682862.

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 26828681 - 2⁶ = 26828617 is a prime.

It is a super-2 number, since 2×26828681² = 1439556248399522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26828651) 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, 25430 + ... + 26463.

It is an arithmetic number, because the mean of its divisors is an integer number (3736368).

Almost surely, 2^26828681 is an apocalyptic number.

It is an amenable number.

26828681 is a deficient number, since it is larger than the sum of its proper divisors (3062263).

26828681 is a wasteful number, since it uses less digits than its factorization.

26828681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51951.

The product of its digits is 73728, while the sum is 41.

The square root of 26828681 is about 5179.6410107265. The cubic root of 26828681 is about 299.3641384041.

The spelling of 26828681 in words is "twenty-six million, eight hundred twenty-eight thousand, six hundred eighty-one".