20302292 has 6 divisors (see below), whose sum is σ = 35529018. Its totient is φ = 10151144.

The previous prime is 20302283. The next prime is 20302297. The reversal of 20302292 is 29220302.

It can be written as a sum of positive squares in only one way, i.e., 18627856 + 1674436 = 4316^2 + 1294^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302297) 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 as a sum of consecutive naturals, namely, 2537783 + ... + 2537790.

It is an arithmetic number, because the mean of its divisors is an integer number (5921503).

Almost surely, 2^20302292 is an apocalyptic number.

It is an amenable number.

20302292 is a deficient number, since it is larger than the sum of its proper divisors (15226726).

20302292 is a wasteful number, since it uses less digits than its factorization.

20302292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075577 (or 5075575 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20302292 is about 4505.8064760928. The cubic root of 20302292 is about 272.8025066920.

Adding to 20302292 its reverse (29220302), we get a palindrome (49522594).

The spelling of 20302292 in words is "twenty million, three hundred two thousand, two hundred ninety-two".