26904489 has 16 divisors (see below), whose sum is σ = 39294720. Its totient is φ = 16298240.

The previous prime is 26904461. The next prime is 26904491. The reversal of 26904489 is 98440962.

It is not a de Polignac number, because 26904489 - 2¹³ = 26896297 is a prime.

It is a super-2 number, since 2×26904489² = 1447703056702242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 26904489.

It is not an unprimeable number, because it can be changed into a prime (26904419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7617 + ... + 10574.

It is an arithmetic number, because the mean of its divisors is an integer number (2455920).

Almost surely, 2^26904489 is an apocalyptic number.

26904489 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

26904489 is a deficient number, since it is larger than the sum of its proper divisors (12390231).

26904489 is a wasteful number, since it uses less digits than its factorization.

26904489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18240.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 26904489 is about 5186.9537302737. The cubic root of 26904489 is about 299.6458376168.

The spelling of 26904489 in words is "twenty-six million, nine hundred four thousand, four hundred eighty-nine".