26221206 has 64 divisors (see below), whose sum is σ = 59719680. Its totient is φ = 7606560.

The previous prime is 26221199. The next prime is 26221229. The reversal of 26221206 is 60212262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245005 + ... + 245111.

It is an arithmetic number, because the mean of its divisors is an integer number (933120).

Almost surely, 2^26221206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26221206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29859840).

26221206 is an abundant number, since it is smaller than the sum of its proper divisors (33498474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26221206 is a wasteful number, since it uses less digits than its factorization.

26221206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 26221206 is about 5120.6646053027. The cubic root of 26221206 is about 297.0873916664.

Adding to 26221206 its reverse (60212262), we get a palindrome (86433468).

It can be divided in two parts, 2622 and 1206, that added together give a triangular number (3828 = T₈₇).

The spelling of 26221206 in words is "twenty-six million, two hundred twenty-one thousand, two hundred six".