26861530 has 16 divisors (see below), whose sum is σ = 51195240. Its totient is φ = 10112512.

The previous prime is 26861509. The next prime is 26861543. The reversal of 26861530 is 3516862.

It can be written as a sum of positive squares in 4 ways, for example, as 26842761 + 18769 = 5181^2 + 137^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26861492 and 26861501.

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 7 ways as a sum of consecutive naturals, for example, 78835 + ... + 79174.

Almost surely, 2^26861530 is an apocalyptic number.

26861530 is a deficient number, since it is larger than the sum of its proper divisors (24333710).

26861530 is a wasteful number, since it uses less digits than its factorization.

26861530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158033.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 26861530 is about 5182.8110133402. The cubic root of 26861530 is about 299.4862689182.

The spelling of 26861530 in words is "twenty-six million, eight hundred sixty-one thousand, five hundred thirty".