26228709 has 12 divisors (see below), whose sum is σ = 40800396. Its totient is φ = 16140672.

The previous prime is 26228707. The next prime is 26228737. The reversal of 26228709 is 90782262.

It can be written as a sum of positive squares in 2 ways, for example, as 7306209 + 18922500 = 2703^2 + 4350^2 .

It is not a de Polignac number, because 26228709 - 2¹ = 26228707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26228707) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 111972 + ... + 112205.

It is an arithmetic number, because the mean of its divisors is an integer number (3400033).

Almost surely, 2^26228709 is an apocalyptic number.

It is an amenable number.

26228709 is a deficient number, since it is larger than the sum of its proper divisors (14571687).

26228709 is a wasteful number, since it uses less digits than its factorization.

26228709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224196 (or 224193 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 26228709 is about 5121.3971726473. The cubic root of 26228709 is about 297.1157254016.

The spelling of 26228709 in words is "twenty-six million, two hundred twenty-eight thousand, seven hundred nine".