20343873 has 8 divisors (see below), whose sum is σ = 29591136. Its totient is φ = 12329600.

The previous prime is 20343871. The next prime is 20343893. The reversal of 20343873 is 37834302.

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 20343873 - 2¹ = 20343871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20343873.

It is not an unprimeable number, because it can be changed into a prime (20343871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308208 + ... + 308273.

It is an arithmetic number, because the mean of its divisors is an integer number (3698892).

Almost surely, 2^20343873 is an apocalyptic number.

It is an amenable number.

20343873 is a deficient number, since it is larger than the sum of its proper divisors (9247263).

20343873 is a wasteful number, since it uses less digits than its factorization.

20343873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616495.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 20343873 is about 4510.4182732869. The cubic root of 20343873 is about 272.9886214045.

The spelling of 20343873 in words is "twenty million, three hundred forty-three thousand, eight hundred seventy-three".