20543714 has 4 divisors (see below), whose sum is σ = 30815574. Its totient is φ = 10271856.

The previous prime is 20543711. The next prime is 20543729. The reversal of 20543714 is 41734502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41734502 = 2 ⋅20867251.

It can be written as a sum of positive squares in only one way, i.e., 10778089 + 9765625 = 3283^2 + 3125^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20543711) 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 as a sum of consecutive naturals, namely, 5135927 + ... + 5135930.

Almost surely, 2^20543714 is an apocalyptic number.

20543714 is a deficient number, since it is larger than the sum of its proper divisors (10271860).

20543714 is a wasteful number, since it uses less digits than its factorization.

20543714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10271859.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 20543714 is about 4532.5174020626. The cubic root of 20543714 is about 273.8795801675.

The spelling of 20543714 in words is "twenty million, five hundred forty-three thousand, seven hundred fourteen".