26628005 has 8 divisors (see below), whose sum is σ = 32187672. Its totient is φ = 21146368.

The previous prime is 26627969. The next prime is 26628013. The reversal of 26628005 is 50082662.

It can be written as a sum of positive squares in 4 ways, for example, as 11519236 + 15108769 = 3394^2 + 3887^2 .

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 26628005 - 2⁸ = 26627749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18752 + ... + 20121.

It is an arithmetic number, because the mean of its divisors is an integer number (4023459).

Almost surely, 2^26628005 is an apocalyptic number.

It is an amenable number.

26628005 is a deficient number, since it is larger than the sum of its proper divisors (5559667).

26628005 is a wasteful number, since it uses less digits than its factorization.

26628005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39015.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 26628005 is about 5160.2330373734. The cubic root of 26628005 is about 298.6158644581.

The spelling of 26628005 in words is "twenty-six million, six hundred twenty-eight thousand, five".