20574343 has 4 divisors (see below), whose sum is σ = 20588008. Its totient is φ = 20560680.

The previous prime is 20574341. The next prime is 20574347. The reversal of 20574343 is 34347502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20574343 - 2¹ = 20574341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20574341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4248 + ... + 7693.

It is an arithmetic number, because the mean of its divisors is an integer number (5147002).

Almost surely, 2^20574343 is an apocalyptic number.

20574343 is a deficient number, since it is larger than the sum of its proper divisors (13665).

20574343 is a wasteful number, since it uses less digits than its factorization.

20574343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13664.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 20574343 is about 4535.8949502827. The cubic root of 20574343 is about 274.0156232767.

It can be divided in two parts, 2057 and 4343, that added together give a square (6400 = 80²).

The spelling of 20574343 in words is "twenty million, five hundred seventy-four thousand, three hundred forty-three".