26645000 has 60 divisors (see below), whose sum is σ = 63296145. Its totient is φ = 10512000.

The previous prime is 26644999. The next prime is 26645009. The reversal of 26645000 is 54662.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 8 ways, for example, as 1223236 + 25421764 = 1106^2 + 5042^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3650.

It is not an unprimeable number, because it can be changed into a prime (26645009) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 364964 + ... + 365036.

Almost surely, 2^26645000 is an apocalyptic number.

26645000 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 26645000

26645000 is an abundant number, since it is smaller than the sum of its proper divisors (36651145).

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

26645000 is an frugal number, since it uses more digits than its factorization.

26645000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 26645000 is about 5161.8795026618. The cubic root of 26645000 is about 298.6793802606.

Adding to 26645000 its reverse (54662), we get a palindrome (26699662).

The spelling of 26645000 in words is "twenty-six million, six hundred forty-five thousand".