26830531 has 16 divisors (see below), whose sum is σ = 34091008. Its totient is φ = 20541600.

The previous prime is 26830519. The next prime is 26830537. The reversal of 26830531 is 13503862.

It is a cyclic number.

It is not a de Polignac number, because 26830531 - 2⁹ = 26830019 is a prime.

It is a super-2 number, since 2×26830531² = 1439754787483922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26830531.

It is not an unprimeable number, because it can be changed into a prime (26830537) 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 15 ways as a sum of consecutive naturals, for example, 1935 + ... + 7576.

It is an arithmetic number, because the mean of its divisors is an integer number (2130688).

Almost surely, 2^26830531 is an apocalyptic number.

26830531 is a deficient number, since it is larger than the sum of its proper divisors (7260477).

26830531 is a wasteful number, since it uses less digits than its factorization.

26830531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9562.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 26830531 is about 5179.8195914530. The cubic root of 26830531 is about 299.3710192360.

The spelling of 26830531 in words is "twenty-six million, eight hundred thirty thousand, five hundred thirty-one".