20960285 has 8 divisors (see below), whose sum is σ = 25313496. Its totient is φ = 16660800.

The previous prime is 20960273. The next prime is 20960293. The reversal of 20960285 is 58206902.

It can be written as a sum of positive squares in 4 ways, for example, as 38809 + 20921476 = 197^2 + 4574^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20960285 - 2⁸ = 20960029 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 12566 + ... + 14135.

It is an arithmetic number, because the mean of its divisors is an integer number (3164187).

Almost surely, 2^20960285 is an apocalyptic number.

It is an amenable number.

20960285 is a deficient number, since it is larger than the sum of its proper divisors (4353211).

20960285 is a wasteful number, since it uses less digits than its factorization.

20960285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26863.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 20960285 is about 4578.2403825051. The cubic root of 20960285 is about 275.7183861789.

The spelling of 20960285 in words is "twenty million, nine hundred sixty thousand, two hundred eighty-five".