20727463 has 4 divisors (see below), whose sum is σ = 20742040. Its totient is φ = 20712888.

The previous prime is 20727457. The next prime is 20727491. The reversal of 20727463 is 36472702.

It is a happy number.

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 20727463 - 2¹³ = 20719271 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 (20727433) 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, 4893 + ... + 8086.

It is an arithmetic number, because the mean of its divisors is an integer number (5185510).

Almost surely, 2^20727463 is an apocalyptic number.

20727463 is a deficient number, since it is larger than the sum of its proper divisors (14577).

20727463 is a wasteful number, since it uses less digits than its factorization.

20727463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14576.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 20727463 is about 4552.7423603802. The cubic root of 20727463 is about 274.6937107788.

The spelling of 20727463 in words is "twenty million, seven hundred twenty-seven thousand, four hundred sixty-three".