20706292 has 6 divisors (see below), whose sum is σ = 36236018. Its totient is φ = 10353144.

The previous prime is 20706269. The next prime is 20706293. The reversal of 20706292 is 29260702.

It can be written as a sum of positive squares in only one way, i.e., 19678096 + 1028196 = 4436^2 + 1014^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20706292.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20706293) by changing a digit.

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 as a sum of consecutive naturals, namely, 2588283 + ... + 2588290.

Almost surely, 2^20706292 is an apocalyptic number.

It is an amenable number.

20706292 is a deficient number, since it is larger than the sum of its proper divisors (15529726).

20706292 is a wasteful number, since it uses less digits than its factorization.

20706292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5176577 (or 5176575 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20706292 is about 4550.4166842170. The cubic root of 20706292 is about 274.6001550026.

Adding to 20706292 its reverse (29260702), we get a palindrome (49966994).

The spelling of 20706292 in words is "twenty million, seven hundred six thousand, two hundred ninety-two".