20712296 has 24 divisors (see below), whose sum is σ = 42689010. Its totient is φ = 9414240.

The previous prime is 20712287. The next prime is 20712301. The reversal of 20712296 is 69221702.

It can be written as a sum of positive squares in only one way, i.e., 11628100 + 9084196 = 3410^2 + 3014^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 9731 + ... + 11666.

Almost surely, 2^20712296 is an apocalyptic number.

It is an amenable number.

20712296 is an abundant number, since it is smaller than the sum of its proper divisors (21976714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20712296 is a wasteful number, since it uses less digits than its factorization.

20712296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21425 (or 21410 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20712296 is about 4551.0763562041. The cubic root of 20712296 is about 274.6266934738.

Adding to 20712296 its reverse (69221702), we get a palindrome (89933998).

The spelling of 20712296 in words is "twenty million, seven hundred twelve thousand, two hundred ninety-six".