26135389 has 16 divisors (see below), whose sum is σ = 30720256. Its totient is φ = 21772800.

The previous prime is 26135381. The next prime is 26135411. The reversal of 26135389 is 98353162.

It is not a de Polignac number, because 26135389 - 2³ = 26135381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26135381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41104 + ... + 41734.

It is an arithmetic number, because the mean of its divisors is an integer number (1920016).

Almost surely, 2^26135389 is an apocalyptic number.

It is an amenable number.

26135389 is a deficient number, since it is larger than the sum of its proper divisors (4584867).

26135389 is an equidigital number, since it uses as much as digits as its factorization.

26135389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796.

The product of its digits is 38880, while the sum is 37.

The square root of 26135389 is about 5112.2782592500. The cubic root of 26135389 is about 296.7629340123.

The spelling of 26135389 in words is "twenty-six million, one hundred thirty-five thousand, three hundred eighty-nine".