26530890 has 16 divisors (see below), whose sum is σ = 63674208. Its totient is φ = 7074896.

The previous prime is 26530873. The next prime is 26530939. The reversal of 26530890 is 9803562.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 442152 + ... + 442211.

It is an arithmetic number, because the mean of its divisors is an integer number (3979638).

Almost surely, 2^26530890 is an apocalyptic number.

26530890 is an abundant number, since it is smaller than the sum of its proper divisors (37143318).

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

26530890 is a wasteful number, since it uses less digits than its factorization.

26530890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884373.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 26530890 is about 5150.8144986982. The cubic root of 26530890 is about 298.2523949119.

The spelling of 26530890 in words is "twenty-six million, five hundred thirty thousand, eight hundred ninety".