26421745 has 8 divisors (see below), whose sum is σ = 36235584. Its totient is φ = 18117744.

The previous prime is 26421739. The next prime is 26421749. The reversal of 26421745 is 54712462.

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 26421745 - 2⁵ = 26421713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26421749) 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 7 ways as a sum of consecutive naturals, for example, 377419 + ... + 377488.

It is an arithmetic number, because the mean of its divisors is an integer number (4529448).

Almost surely, 2^26421745 is an apocalyptic number.

It is an amenable number.

26421745 is a deficient number, since it is larger than the sum of its proper divisors (9813839).

26421745 is an equidigital number, since it uses as much as digits as its factorization.

26421745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754919.

The product of its digits is 13440, while the sum is 31.

The square root of 26421745 is about 5140.2086533525. The cubic root of 26421745 is about 297.8428408742.

The spelling of 26421745 in words is "twenty-six million, four hundred twenty-one thousand, seven hundred forty-five".