20463147 has 24 divisors (see below), whose sum is σ = 30466800. Its totient is φ = 13229568.

The previous prime is 20463139. The next prime is 20463181. The reversal of 20463147 is 74136402.

20463147 is a `hidden beast` number, since 20 + 4 + 631 + 4 + 7 = 666.

It is not a de Polignac number, because 20463147 - 2³ = 20463139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20463147.

It is not an unprimeable number, because it can be changed into a prime (20463137) 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 23 ways as a sum of consecutive naturals, for example, 47043 + ... + 47475.

It is an arithmetic number, because the mean of its divisors is an integer number (1269450).

Almost surely, 2^20463147 is an apocalyptic number.

20463147 is a deficient number, since it is larger than the sum of its proper divisors (10003653).

20463147 is a wasteful number, since it uses less digits than its factorization.

20463147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20463147 is about 4523.6210053452. The cubic root of 20463147 is about 273.5210834134.

Adding to 20463147 its reverse (74136402), we get a palindrome (94599549).

The spelling of 20463147 in words is "twenty million, four hundred sixty-three thousand, one hundred forty-seven".