26505630 has 80 divisors (see below), whose sum is σ = 73023984. Its totient is φ = 6894720.

The previous prime is 26505629. The next prime is 26505631. The reversal of 26505630 is 3650562.

26505630 is a `hidden beast` number, since 2 + 650 + 5 + 6 + 3 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (26505629) and next prime (26505631).

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26505594 and 26505603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26505631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34450 + ... + 35210.

Almost surely, 2^26505630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26505630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36511992).

26505630 is an abundant number, since it is smaller than the sum of its proper divisors (46518354).

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

26505630 is a wasteful number, since it uses less digits than its factorization.

26505630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823 (or 814 counting only the distinct ones).

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

The square root of 26505630 is about 5148.3618753930. The cubic root of 26505630 is about 298.1577097135.

The spelling of 26505630 in words is "twenty-six million, five hundred five thousand, six hundred thirty".