20702212 has 12 divisors (see below), whose sum is σ = 37112796. Its totient is φ = 10098560.

The previous prime is 20702189. The next prime is 20702219. The reversal of 20702212 is 21220702.

It can be written as a sum of positive squares in 2 ways, for example, as 4186116 + 16516096 = 2046^2 + 4064^2 .

It is not an unprimeable number, because it can be changed into a prime (20702219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62953 + ... + 63280.

It is an arithmetic number, because the mean of its divisors is an integer number (3092733).

Almost surely, 2^20702212 is an apocalyptic number.

It is an amenable number.

20702212 is a deficient number, since it is larger than the sum of its proper divisors (16410584).

20702212 is a wasteful number, since it uses less digits than its factorization.

20702212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126278 (or 126276 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 20702212 is about 4549.9683515383. The cubic root of 20702212 is about 274.5821179372.

Adding to 20702212 its reverse (21220702), we get a palindrome (41922914).

The spelling of 20702212 in words is "twenty million, seven hundred two thousand, two hundred twelve".