26135540 has 12 divisors (see below), whose sum is σ = 54884676. Its totient is φ = 10454208.

The previous prime is 26135539. The next prime is 26135569. The reversal of 26135540 is 4553162.

It can be written as a sum of positive squares in 2 ways, for example, as 3363556 + 22771984 = 1834^2 + 4772^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653369 + ... + 653408.

It is an arithmetic number, because the mean of its divisors is an integer number (4573723).

Almost surely, 2^26135540 is an apocalyptic number.

26135540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26135540 is an abundant number, since it is smaller than the sum of its proper divisors (28749136).

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

26135540 is a wasteful number, since it uses less digits than its factorization.

26135540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306786 (or 1306784 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 26135540 is about 5112.2930275953. The cubic root of 26135540 is about 296.7635055377.

The spelling of 26135540 in words is "twenty-six million, one hundred thirty-five thousand, five hundred forty".