26120005 has 4 divisors (see below), whose sum is σ = 31344012. Its totient is φ = 20896000.

The previous prime is 26119991. The next prime is 26120047. The reversal of 26120005 is 50002162.

It is a happy number.

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 5171076 + 20948929 = 2274^2 + 4577^2 .

It is not a de Polignac number, because 26120005 - 2⁹ = 26119493 is a prime.

It is a super-2 number, since 2×26120005² = 1364509322400050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2611996 + ... + 2612005.

It is an arithmetic number, because the mean of its divisors is an integer number (7836003).

Almost surely, 2^26120005 is an apocalyptic number.

It is an amenable number.

26120005 is a deficient number, since it is larger than the sum of its proper divisors (5224007).

26120005 is an equidigital number, since it uses as much as digits as its factorization.

26120005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5224006.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 26120005 is about 5110.7734248350. The cubic root of 26120005 is about 296.7046950087.

Adding to 26120005 its reverse (50002162), we get a palindrome (76122167).

The spelling of 26120005 in words is "twenty-six million, one hundred twenty thousand, five".