20873017 has 8 divisors (see below), whose sum is σ = 23300640. Its totient is φ = 18533760.

The previous prime is 20873003. The next prime is 20873051. The reversal of 20873017 is 71037802.

It is a happy number.

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 20873017 - 2¹⁹ = 20348729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20873087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21592 + ... + 22537.

It is an arithmetic number, because the mean of its divisors is an integer number (2912580).

Almost surely, 2^20873017 is an apocalyptic number.

It is an amenable number.

20873017 is a deficient number, since it is larger than the sum of its proper divisors (2427623).

20873017 is a wasteful number, since it uses less digits than its factorization.

20873017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44183.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 20873017 is about 4568.6997056055. The cubic root of 20873017 is about 275.3352033687.

The spelling of 20873017 in words is "twenty million, eight hundred seventy-three thousand, seventeen".