26434109 has 8 divisors (see below), whose sum is σ = 29449560. Its totient is φ = 23558976.

The previous prime is 26434091. The next prime is 26434123. The reversal of 26434109 is 90143462.

It can be written as a sum of positive squares in 4 ways, for example, as 648025 + 25786084 = 805^2 + 5078^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26434109 - 2²⁰ = 25385533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26434129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34682 + ... + 35435.

It is an arithmetic number, because the mean of its divisors is an integer number (3681195).

Almost surely, 2^26434109 is an apocalyptic number.

26434109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

26434109 is a deficient number, since it is larger than the sum of its proper divisors (3015451).

26434109 is a wasteful number, since it uses less digits than its factorization.

26434109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70159.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 26434109 is about 5141.4111876021. The cubic root of 26434109 is about 297.8892919397.

The spelling of 26434109 in words is "twenty-six million, four hundred thirty-four thousand, one hundred nine".