26920005 has 64 divisors (see below), whose sum is σ = 52420608. Its totient is φ = 11531520.

The previous prime is 26919983. The next prime is 26920007. The reversal of 26920005 is 50002962.

It is not a de Polignac number, because 26920005 - 2¹⁷ = 26788933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26920007) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 171387 + ... + 171543.

It is an arithmetic number, because the mean of its divisors is an integer number (819072).

Almost surely, 2^26920005 is an apocalyptic number.

It is an amenable number.

26920005 is a deficient number, since it is larger than the sum of its proper divisors (25500603).

26920005 is a wasteful number, since it uses less digits than its factorization.

26920005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 26920005 is about 5188.4491902687. The cubic root of 26920005 is about 299.7034291379.

Adding to 26920005 its reverse (50002962), we get a palindrome (76922967).

The spelling of 26920005 in words is "twenty-six million, nine hundred twenty thousand, five".