20463506 has 16 divisors (see below), whose sum is σ = 35562624. Its totient is φ = 8649504.

The previous prime is 20463467. The next prime is 20463517. The reversal of 20463506 is 60536402.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8990 + ... + 11033.

It is an arithmetic number, because the mean of its divisors is an integer number (2222664).

Almost surely, 2^20463506 is an apocalyptic number.

20463506 is a deficient number, since it is larger than the sum of its proper divisors (15099118).

20463506 is a wasteful number, since it uses less digits than its factorization.

20463506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20105.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 20463506 is about 4523.6606857721. The cubic root of 20463506 is about 273.5226829310.

Adding to 20463506 its reverse (60536402), we get a palindrome (80999908).

The spelling of 20463506 in words is "twenty million, four hundred sixty-three thousand, five hundred six".