26805630 has 16 divisors (see below), whose sum is σ = 64333584. Its totient is φ = 7148160.

The previous prime is 26805629. The next prime is 26805631. The reversal of 26805630 is 3650862.

It is an interprime number because it is at equal distance from previous prime (26805629) and next prime (26805631).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 893521 = 26805630 / (2 + 6 + 8 + 0 + 5 + 6 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26805631) 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 7 ways as a sum of consecutive naturals, for example, 446731 + ... + 446790.

It is an arithmetic number, because the mean of its divisors is an integer number (4020849).

Almost surely, 2^26805630 is an apocalyptic number.

26805630 is an abundant number, since it is smaller than the sum of its proper divisors (37527954).

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

26805630 is a wasteful number, since it uses less digits than its factorization.

26805630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893531.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 26805630 is about 5177.4153783524. The cubic root of 26805630 is about 299.2783767023.

The spelling of 26805630 in words is "twenty-six million, eight hundred five thousand, six hundred thirty".