26101985 has 16 divisors (see below), whose sum is σ = 38551296. Its totient is φ = 16521408.

The previous prime is 26101981. The next prime is 26101993. The reversal of 26101985 is 58910162.

26101985 = 163² + 164² + ... + 435².

26101985 is nontrivially palindromic in base 8.

It is a cyclic number.

It is not a de Polignac number, because 26101985 - 2² = 26101981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26101981) 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 15 ways as a sum of consecutive naturals, for example, 28229 + ... + 29138.

It is an arithmetic number, because the mean of its divisors is an integer number (2409456).

Almost surely, 2^26101985 is an apocalyptic number.

It is an amenable number.

26101985 is a deficient number, since it is larger than the sum of its proper divisors (12449311).

26101985 is a wasteful number, since it uses less digits than its factorization.

26101985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57392.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 26101985 is about 5109.0101781069. The cubic root of 26101985 is about 296.6364478471.

The spelling of 26101985 in words is "twenty-six million, one hundred one thousand, nine hundred eighty-five".