26645216 has 48 divisors (see below), whose sum is σ = 56977200. Its totient is φ = 12265344.

The previous prime is 26645207. The next prime is 26645233. The reversal of 26645216 is 61254662.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 70115 + ... + 70493.

It is an arithmetic number, because the mean of its divisors is an integer number (1187025).

Almost surely, 2^26645216 is an apocalyptic number.

26645216 is a gapful number since it is divisible by the number (26) 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 26645216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28488600).

26645216 is an abundant number, since it is smaller than the sum of its proper divisors (30331984).

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

26645216 is an equidigital number, since it uses as much as digits as its factorization.

26645216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 394 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 26645216 is about 5161.9004252310. The cubic root of 26645216 is about 298.6801873485.

Adding to 26645216 its reverse (61254662), we get a palindrome (87899878).

The spelling of 26645216 in words is "twenty-six million, six hundred forty-five thousand, two hundred sixteen".