26530090 has 24 divisors (see below), whose sum is σ = 48832452. Its totient is φ = 10377600.

The previous prime is 26530067. The next prime is 26530093. The reversal of 26530090 is 9003562.

It can be written as a sum of positive squares in 2 ways, for example, as 21650409 + 4879681 = 4653^2 + 2209^2 .

It is not an unprimeable number, because it can be changed into a prime (26530093) 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 11 ways as a sum of consecutive naturals, for example, 21490 + ... + 22690.

Almost surely, 2^26530090 is an apocalyptic number.

26530090 is a deficient number, since it is larger than the sum of its proper divisors (22302362).

26530090 is a wasteful number, since it uses less digits than its factorization.

26530090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 26530090 is about 5150.7368404919. The cubic root of 26530090 is about 298.2493970942.

The spelling of 26530090 in words is "twenty-six million, five hundred thirty thousand, ninety".