20968202 has 4 divisors (see below), whose sum is σ = 31452306. Its totient is φ = 10484100.

The previous prime is 20968177. The next prime is 20968223. The reversal of 20968202 is 20286902.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20286902 = 2 ⋅10143451.

It can be written as a sum of positive squares in only one way, i.e., 20967241 + 961 = 4579^2 + 31^2 .

It is a super-2 number, since 2×20968202² = 879330990225608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5242049 + ... + 5242052.

Almost surely, 2^20968202 is an apocalyptic number.

20968202 is a deficient number, since it is larger than the sum of its proper divisors (10484104).

20968202 is a wasteful number, since it uses less digits than its factorization.

20968202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10484103.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20968202 is about 4579.1049343731. The cubic root of 20968202 is about 275.7530960709.

The spelling of 20968202 in words is "twenty million, nine hundred sixty-eight thousand, two hundred two".