26229985 has 4 divisors (see below), whose sum is σ = 31475988. Its totient is φ = 20983984.

The previous prime is 26229979. The next prime is 26230021. The reversal of 26229985 is 58992262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13719616 + 12510369 = 3704^2 + 3537^2 .

It is a cyclic number.

It is not a de Polignac number, because 26229985 - 2⁵ = 26229953 is a prime.

It is a super-2 number, since 2×26229985² = 1376024226200450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2622994 + ... + 2623003.

It is an arithmetic number, because the mean of its divisors is an integer number (7868997).

Almost surely, 2^26229985 is an apocalyptic number.

It is an amenable number.

26229985 is a deficient number, since it is larger than the sum of its proper divisors (5246003).

26229985 is an equidigital number, since it uses as much as digits as its factorization.

26229985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5246002.

The product of its digits is 155520, while the sum is 43.

The square root of 26229985 is about 5121.5217465125. The cubic root of 26229985 is about 297.1205434494.

The spelling of 26229985 in words is "twenty-six million, two hundred twenty-nine thousand, nine hundred eighty-five".