26531216 has 10 divisors (see below), whose sum is σ = 51404262. Its totient is φ = 13265600.

The previous prime is 26531207. The next prime is 26531221. The reversal of 26531216 is 61213562.

It can be written as a sum of positive squares in only one way, i.e., 13542400 + 12988816 = 3680^2 + 3604^2 .

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 as a sum of consecutive naturals, namely, 829085 + ... + 829116.

Almost surely, 2^26531216 is an apocalyptic number.

It is an amenable number.

26531216 is a deficient number, since it is larger than the sum of its proper divisors (24873046).

26531216 is a wasteful number, since it uses less digits than its factorization.

26531216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658209 (or 1658203 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 26531216 is about 5150.8461440816. The cubic root of 26531216 is about 298.2536165053.

Adding to 26531216 its reverse (61213562), we get a palindrome (87744778).

The spelling of 26531216 in words is "twenty-six million, five hundred thirty-one thousand, two hundred sixteen".