20340202 has 4 divisors (see below), whose sum is σ = 30510306. Its totient is φ = 10170100.

The previous prime is 20340197. The next prime is 20340233. The reversal of 20340202 is 20204302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20204302 = 2 ⋅10102151.

It can be written as a sum of positive squares in only one way, i.e., 19193161 + 1147041 = 4381^2 + 1071^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5085049 + ... + 5085052.

Almost surely, 2^20340202 is an apocalyptic number.

20340202 is a deficient number, since it is larger than the sum of its proper divisors (10170104).

20340202 is a wasteful number, since it uses less digits than its factorization.

20340202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10170103.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 20340202 is about 4510.0113081898. The cubic root of 20340202 is about 272.9722003832.

Adding to 20340202 its reverse (20204302), we get a palindrome (40544504).

The spelling of 20340202 in words is "twenty million, three hundred forty thousand, two hundred two".