20213296 has 10 divisors (see below), whose sum is σ = 39163292. Its totient is φ = 10106640.

The previous prime is 20213293. The next prime is 20213309. The reversal of 20213296 is 69231202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20213296.

It is not an unprimeable number, because it can be changed into a prime (20213293) 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 as a sum of consecutive naturals, namely, 631650 + ... + 631681.

Almost surely, 2^20213296 is an apocalyptic number.

It is an amenable number.

20213296 is a deficient number, since it is larger than the sum of its proper divisors (18949996).

20213296 is a wasteful number, since it uses less digits than its factorization.

20213296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263339 (or 1263333 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20213296 is about 4495.9199281126. The cubic root of 20213296 is about 272.4033088481.

Adding to 20213296 its reverse (69231202), we get a palindrome (89444498).

The spelling of 20213296 in words is "twenty million, two hundred thirteen thousand, two hundred ninety-six".