20827130 has 8 divisors (see below), whose sum is σ = 37488852. Its totient is φ = 8330848.

The previous prime is 20827123. The next prime is 20827181. The reversal of 20827130 is 3172802.

It can be written as a sum of positive squares in 2 ways, for example, as 20421361 + 405769 = 4519^2 + 637^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20827096 and 20827105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041347 + ... + 1041366.

Almost surely, 2^20827130 is an apocalyptic number.

20827130 is a deficient number, since it is larger than the sum of its proper divisors (16661722).

20827130 is a wasteful number, since it uses less digits than its factorization.

20827130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082720.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 20827130 is about 4563.6750541641. The cubic root of 20827130 is about 275.1332907563.

Adding to 20827130 its reverse (3172802), we get a palindrome (23999932).

The spelling of 20827130 in words is "twenty million, eight hundred twenty-seven thousand, one hundred thirty".