26928665 has 8 divisors (see below), whose sum is σ = 32383680. Its totient is φ = 21496752.

The previous prime is 26928647. The next prime is 26928673. The reversal of 26928665 is 56682962.

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 26928665 - 2⁸ = 26928409 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3095 + ... + 7964.

It is an arithmetic number, because the mean of its divisors is an integer number (4047960).

Almost surely, 2^26928665 is an apocalyptic number.

It is an amenable number.

26928665 is a deficient number, since it is larger than the sum of its proper divisors (5455015).

26928665 is a wasteful number, since it uses less digits than its factorization.

26928665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11551.

The product of its digits is 311040, while the sum is 44.

The square root of 26928665 is about 5189.2836692553. The cubic root of 26928665 is about 299.7355632755.

It can be divided in two parts, 26928 and 665, that multiplied together give a triangular number (17907120 = T₅₉₈₄).

The spelling of 26928665 in words is "twenty-six million, nine hundred twenty-eight thousand, six hundred sixty-five".