20741305 has 8 divisors (see below), whose sum is σ = 26804232. Its totient is φ = 15316608.

The previous prime is 20741297. The next prime is 20741311. The reversal of 20741305 is 50314702.

It can be written as a sum of positive squares in 4 ways, for example, as 383161 + 20358144 = 619^2 + 4512^2 .

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 20741305 - 2³ = 20741297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159484 + ... + 159613.

It is an arithmetic number, because the mean of its divisors is an integer number (3350529).

Almost surely, 2^20741305 is an apocalyptic number.

It is an amenable number.

20741305 is a deficient number, since it is larger than the sum of its proper divisors (6062927).

20741305 is a wasteful number, since it uses less digits than its factorization.

20741305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319115.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20741305 is about 4554.2622893285. The cubic root of 20741305 is about 274.7548448766.

The spelling of 20741305 in words is "twenty million, seven hundred forty-one thousand, three hundred five".