20944473 has 8 divisors (see below), whose sum is σ = 30464736. Its totient is φ = 12693600.

The previous prime is 20944463. The next prime is 20944477. The reversal of 20944473 is 37444902.

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

It is not a de Polignac number, because 20944473 - 2¹⁰ = 20943449 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 634681 = 20944473 / (2 + 0 + 9 + 4 + 4 + 4 + 7 + 3).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20944477) 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, 317308 + ... + 317373.

It is an arithmetic number, because the mean of its divisors is an integer number (3808092).

Almost surely, 2^20944473 is an apocalyptic number.

It is an amenable number.

20944473 is a deficient number, since it is larger than the sum of its proper divisors (9520263).

20944473 is a wasteful number, since it uses less digits than its factorization.

20944473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634695.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 20944473 is about 4576.5131923769. The cubic root of 20944473 is about 275.6490366787.

The spelling of 20944473 in words is "twenty million, nine hundred forty-four thousand, four hundred seventy-three".