20630882 has 8 divisors (see below), whose sum is σ = 30995676. Its totient is φ = 10298992.

The previous prime is 20630879. The next prime is 20630887. The reversal of 20630882 is 28803602.

It can be written as a sum of positive squares in 2 ways, for example, as 20620681 + 10201 = 4541^2 + 101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20630887) 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, 6593 + ... + 9204.

Almost surely, 2^20630882 is an apocalyptic number.

20630882 is a deficient number, since it is larger than the sum of its proper divisors (10364794).

20630882 is a wasteful number, since it uses less digits than its factorization.

20630882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16452.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 20630882 is about 4542.1230718685. The cubic root of 20630882 is about 274.2663951495.

It can be divided in two parts, 20630 and 882, that added together give a palindrome (21512).

The spelling of 20630882 in words is "twenty million, six hundred thirty thousand, eight hundred eighty-two".