26478259 has 2 divisors, whose sum is σ = 26478260. Its totient is φ = 26478258.

The previous prime is 26478253. The next prime is 26478271. The reversal of 26478259 is 95287462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26478259 - 2¹¹ = 26476211 is a prime.

It is not a weakly prime, because it can be changed into another prime (26478253) 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 as a sum of consecutive naturals, namely, 13239129 + 13239130.

It is an arithmetic number, because the mean of its divisors is an integer number (13239130).

Almost surely, 2^26478259 is an apocalyptic number.

26478259 is a deficient number, since it is larger than the sum of its proper divisors (1).

26478259 is an equidigital number, since it uses as much as digits as its factorization.

26478259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 26478259 is about 5145.7029646104. The cubic root of 26478259 is about 298.0550436586.

The spelling of 26478259 in words is "twenty-six million, four hundred seventy-eight thousand, two hundred fifty-nine".