26220015 has 24 divisors (see below), whose sum is σ = 45698640. Its totient is φ = 13906944.

The previous prime is 26220011. The next prime is 26220037. The reversal of 26220015 is 51002262.

It is not a de Polignac number, because 26220015 - 2² = 26220011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26220015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26220011) 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 23 ways as a sum of consecutive naturals, for example, 7176 + ... + 10194.

It is an arithmetic number, because the mean of its divisors is an integer number (1904110).

Almost surely, 2^26220015 is an apocalyptic number.

26220015 is a deficient number, since it is larger than the sum of its proper divisors (19478625).

26220015 is a wasteful number, since it uses less digits than its factorization.

26220015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223 (or 3220 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 26220015 is about 5120.5483104839. The cubic root of 26220015 is about 297.0828935712.

Adding to 26220015 its reverse (51002262), we get a palindrome (77222277).

The spelling of 26220015 in words is "twenty-six million, two hundred twenty thousand, fifteen".