26040609 has 39 divisors (see below), whose sum is σ = 45438177. Its totient is φ = 14880348.

The previous prime is 26040607. The next prime is 26040613. The reversal of 26040609 is 90604062.

The square root of 26040609 is 5103.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 26040609 - 2¹ = 26040607 is a prime.

It is a super-2 number, since 2×26040609² = 1356226634181762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (26040601) 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 in 38 ways as a sum of consecutive naturals, for example, 3720084 + ... + 3720090.

Almost surely, 2^26040609 is an apocalyptic number.

26040609 is the 5103-rd square number.

26040609 is the 2552-nd centered octagonal number.

It is an amenable number.

26040609 is a deficient number, since it is larger than the sum of its proper divisors (19397568).

26040609 is an frugal number, since it uses more digits than its factorization.

26040609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The cubic root of 26040609 is about 296.4037625119.

The spelling of 26040609 in words is "twenty-six million, forty thousand, six hundred nine".