20873073 has 8 divisors (see below), whose sum is σ = 29971648. Its totient is φ = 12844944.

The previous prime is 20873071. The next prime is 20873087. The reversal of 20873073 is 37037802.

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

It is not a de Polignac number, because 20873073 - 2¹ = 20873071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20873073.

It is not an unprimeable number, because it can be changed into a prime (20873071) 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, 267565 + ... + 267642.

It is an arithmetic number, because the mean of its divisors is an integer number (3746456).

Almost surely, 2^20873073 is an apocalyptic number.

It is an amenable number.

20873073 is a deficient number, since it is larger than the sum of its proper divisors (9098575).

20873073 is a wasteful number, since it uses less digits than its factorization.

20873073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535223.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 20873073 is about 4568.7058342599. The cubic root of 20873073 is about 275.3354495998.

The spelling of 20873073 in words is "twenty million, eight hundred seventy-three thousand, seventy-three".