26530290 has 24 divisors (see below), whose sum is σ = 68978988. Its totient is φ = 7074720.

The previous prime is 26530279. The next prime is 26530291. The reversal of 26530290 is 9203562.

26530290 is a `hidden beast` number, since 2 + 653 + 0 + 2 + 9 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25010001 + 1520289 = 5001^2 + 1233^2 .

It is not an unprimeable number, because it can be changed into a prime (26530291) 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 11 ways as a sum of consecutive naturals, for example, 147301 + ... + 147480.

Almost surely, 2^26530290 is an apocalyptic number.

26530290 is an abundant number, since it is smaller than the sum of its proper divisors (42448698).

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

26530290 is a wasteful number, since it uses less digits than its factorization.

26530290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294794 (or 294791 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 26530290 is about 5150.7562551532. The cubic root of 26530290 is about 298.2501465543.

The spelling of 26530290 in words is "twenty-six million, five hundred thirty thousand, two hundred ninety".