20714047 has 4 divisors (see below), whose sum is σ = 21804280. Its totient is φ = 19623816.

The previous prime is 20714017. The next prime is 20714051. The reversal of 20714047 is 74041702.

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 20714047 - 2¹⁹ = 20189759 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 (20714017) 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, 545088 + ... + 545125.

It is an arithmetic number, because the mean of its divisors is an integer number (5451070).

Almost surely, 2^20714047 is an apocalyptic number.

20714047 is a deficient number, since it is larger than the sum of its proper divisors (1090233).

20714047 is a wasteful number, since it uses less digits than its factorization.

20714047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090232.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 20714047 is about 4551.2687242131. The cubic root of 20714047 is about 274.6344321586.

Adding to 20714047 its reverse (74041702), we get a palindrome (94755749).

The spelling of 20714047 in words is "twenty million, seven hundred fourteen thousand, forty-seven".