20609202 has 32 divisors (see below), whose sum is σ = 44114112. Its totient is φ = 6395904.

The previous prime is 20609191. The next prime is 20609207. The reversal of 20609202 is 20290602.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20609207) 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 in 15 ways as a sum of consecutive naturals, for example, 8853 + ... + 10935.

It is an arithmetic number, because the mean of its divisors is an integer number (1378566).

Almost surely, 2^20609202 is an apocalyptic number.

20609202 is an abundant number, since it is smaller than the sum of its proper divisors (23504910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20609202 is a wasteful number, since it uses less digits than its factorization.

20609202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20609202 is about 4539.7358954018. The cubic root of 20609202 is about 274.1702903637.

Adding to 20609202 its reverse (20290602), we get a palindrome (40899804).

The spelling of 20609202 in words is "twenty million, six hundred nine thousand, two hundred two".