20580983 has 8 divisors (see below), whose sum is σ = 21111840. Its totient is φ = 20056960.

The previous prime is 20580979. The next prime is 20580997. The reversal of 20580983 is 38908502.

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 20580983 - 2² = 20580979 is a prime.

It is a super-2 number, since 2×20580983² = 847153722492578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20580953) 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, 4691 + ... + 7947.

It is an arithmetic number, because the mean of its divisors is an integer number (2638980).

Almost surely, 2^20580983 is an apocalyptic number.

20580983 is a deficient number, since it is larger than the sum of its proper divisors (530857).

20580983 is an equidigital number, since it uses as much as digits as its factorization.

20580983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 20580983 is about 4536.6268305868. The cubic root of 20580983 is about 274.0450979812.

The spelling of 20580983 in words is "twenty million, five hundred eighty thousand, nine hundred eighty-three".