26605530 has 96 divisors (see below), whose sum is σ = 82572480. Its totient is φ = 6078240.

The previous prime is 26605517. The next prime is 26605543. The reversal of 26605530 is 3550662.

26605530 is a `hidden beast` number, since 2 + 6 + 605 + 53 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (26605517) and next prime (26605543).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 26605494 and 26605503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12225 + ... + 14235.

It is an arithmetic number, because the mean of its divisors is an integer number (860130).

Almost surely, 2^26605530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26605530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41286240).

26605530 is an abundant number, since it is smaller than the sum of its proper divisors (55966950).

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

26605530 is a wasteful number, since it uses less digits than its factorization.

26605530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041 (or 2028 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 26605530 is about 5158.0548659354. The cubic root of 26605530 is about 298.5318266108.

It can be divided in two parts, 266055 and 30, that added together give a triangular number (266085 = T₇₂₉).

The spelling of 26605530 in words is "twenty-six million, six hundred five thousand, five hundred thirty".