26645530 has 8 divisors (see below), whose sum is σ = 47961972. Its totient is φ = 10658208.

The previous prime is 26645497. The next prime is 26645537. The reversal of 26645530 is 3554662.

It can be written as a sum of positive squares in 2 ways, for example, as 25130169 + 1515361 = 5013^2 + 1231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 26645492 and 26645501.

It is not an unprimeable number, because it can be changed into a prime (26645537) 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 3 ways as a sum of consecutive naturals, for example, 1332267 + ... + 1332286.

Almost surely, 2^26645530 is an apocalyptic number.

26645530 is a deficient number, since it is larger than the sum of its proper divisors (21316442).

26645530 is a wasteful number, since it uses less digits than its factorization.

26645530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664560.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 26645530 is about 5161.9308402961. The cubic root of 26645530 is about 298.6813606074.

It can be divided in two parts, 266 and 45530, that added together give a square (45796 = 214²).

The spelling of 26645530 in words is "twenty-six million, six hundred forty-five thousand, five hundred thirty".