26904545 has 4 divisors (see below), whose sum is σ = 32285460. Its totient is φ = 21523632.

The previous prime is 26904491. The next prime is 26904593. The reversal of 26904545 is 54540962.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8042896 + 18861649 = 2836^2 + 4343^2 .

It is a cyclic number.

It is not a de Polignac number, because 26904545 - 2¹⁴ = 26888161 is a prime.

26904545 is a modest number, since divided by 4545 gives 2690 as remainder.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2690450 + ... + 2690459.

It is an arithmetic number, because the mean of its divisors is an integer number (8071365).

Almost surely, 2^26904545 is an apocalyptic number.

It is an amenable number.

26904545 is a deficient number, since it is larger than the sum of its proper divisors (5380915).

26904545 is an equidigital number, since it uses as much as digits as its factorization.

26904545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5380914.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 26904545 is about 5186.9591284297. The cubic root of 26904545 is about 299.6460455146.

The spelling of 26904545 in words is "twenty-six million, nine hundred four thousand, five hundred forty-five".