20711230 has 8 divisors (see below), whose sum is σ = 37280232. Its totient is φ = 8284488.

The previous prime is 20711227. The next prime is 20711233. The reversal of 20711230 is 3211702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20711227) and next prime (20711233).

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

It is a super-2 number, since 2×20711230² = 857910096225800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20711233) 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, 1035552 + ... + 1035571.

It is an arithmetic number, because the mean of its divisors is an integer number (4660029).

Almost surely, 2^20711230 is an apocalyptic number.

20711230 is a deficient number, since it is larger than the sum of its proper divisors (16569002).

20711230 is a wasteful number, since it uses less digits than its factorization.

20711230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071130.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 20711230 is about 4550.9592395450. The cubic root of 20711230 is about 274.6219819878.

Adding to 20711230 its reverse (3211702), we get a palindrome (23922932).

The spelling of 20711230 in words is "twenty million, seven hundred eleven thousand, two hundred thirty".