26627220 has 72 divisors (see below), whose sum is σ = 83570760. Its totient is φ = 6854400.

The previous prime is 26627213. The next prime is 26627221. The reversal of 26627220 is 2272662.

It can be written as a sum of positive squares in 4 ways, for example, as 63504 + 26563716 = 252^2 + 5154^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26627221) 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 23 ways as a sum of consecutive naturals, for example, 2670 + ... + 7770.

It is an arithmetic number, because the mean of its divisors is an integer number (1160705).

Almost surely, 2^26627220 is an apocalyptic number.

26627220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26627220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41785380).

26627220 is an abundant number, since it is smaller than the sum of its proper divisors (56943540).

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

26627220 is a wasteful number, since it uses less digits than its factorization.

26627220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145 (or 5140 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 26627220 is about 5160.1569743565. The cubic root of 26627220 is about 298.6129300067.

Adding to 26627220 its reverse (2272662), we get a palindrome (28899882).

The spelling of 26627220 in words is "twenty-six million, six hundred twenty-seven thousand, two hundred twenty".