20283217 has 8 divisors (see below), whose sum is σ = 21263040. Its totient is φ = 19311600.

The previous prime is 20283199. The next prime is 20283223. The reversal of 20283217 is 71238202.

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 20283217 - 2¹¹ = 20281169 is a prime.

It is a super-3 number, since 3×20283217³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 20283191 and 20283200.

It is not an unprimeable number, because it can be changed into a prime (20283247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3342 + ... + 7192.

It is an arithmetic number, because the mean of its divisors is an integer number (2657880).

Almost surely, 2^20283217 is an apocalyptic number.

It is an amenable number.

20283217 is a deficient number, since it is larger than the sum of its proper divisors (979823).

20283217 is a wasteful number, since it uses less digits than its factorization.

20283217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 20283217 is about 4503.6892654800. The cubic root of 20283217 is about 272.7170428048.

The spelling of 20283217 in words is "twenty million, two hundred eighty-three thousand, two hundred seventeen".