20380202 has 4 divisors (see below), whose sum is σ = 30570306. Its totient is φ = 10190100.

The previous prime is 20380177. The next prime is 20380207. The reversal of 20380202 is 20208302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19722481 + 657721 = 4441^2 + 811^2 .

It is not an unprimeable number, because it can be changed into a prime (20380207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5095049 + ... + 5095052.

Almost surely, 2^20380202 is an apocalyptic number.

20380202 is a deficient number, since it is larger than the sum of its proper divisors (10190104).

20380202 is a wasteful number, since it uses less digits than its factorization.

20380202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10190103.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20380202 is about 4514.4437088084. The cubic root of 20380202 is about 273.1510209331.

Adding to 20380202 its reverse (20208302), we get a palindrome (40588504).

The spelling of 20380202 in words is "twenty million, three hundred eighty thousand, two hundred two".