20712182 has 8 divisors (see below), whose sum is σ = 31216152. Its totient is φ = 10306800.

The previous prime is 20712163. The next prime is 20712187. The reversal of 20712182 is 28121702.

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

It is a super-2 number, since 2×20712182² = 857988966402248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20712187) 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, 24119 + ... + 24962.

It is an arithmetic number, because the mean of its divisors is an integer number (3902019).

Almost surely, 2^20712182 is an apocalyptic number.

20712182 is a deficient number, since it is larger than the sum of its proper divisors (10503970).

20712182 is a wasteful number, since it uses less digits than its factorization.

20712182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49294.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 20712182 is about 4551.0638316772. The cubic root of 20712182 is about 274.6261896265.

Adding to 20712182 its reverse (28121702), we get a palindrome (48833884).

The spelling of 20712182 in words is "twenty million, seven hundred twelve thousand, one hundred eighty-two".