20327047 has 4 divisors (see below), whose sum is σ = 21890680. Its totient is φ = 18763416.

The previous prime is 20327039. The next prime is 20327117. The reversal of 20327047 is 74072302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74072302 = 2 ⋅37036151.

It is a cyclic number.

It is not a de Polignac number, because 20327047 - 2³ = 20327039 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 (20327947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781797 + ... + 781822.

It is an arithmetic number, because the mean of its divisors is an integer number (5472670).

Almost surely, 2^20327047 is an apocalyptic number.

20327047 is a deficient number, since it is larger than the sum of its proper divisors (1563633).

20327047 is a wasteful number, since it uses less digits than its factorization.

20327047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563632.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 20327047 is about 4508.5526502415. The cubic root of 20327047 is about 272.9133395499.

Adding to 20327047 its reverse (74072302), we get a palindrome (94399349).

The spelling of 20327047 in words is "twenty million, three hundred twenty-seven thousand, forty-seven".