20540202 has 8 divisors (see below), whose sum is σ = 41080416. Its totient is φ = 6846732.

The previous prime is 20540171. The next prime is 20540209. The reversal of 20540202 is 20204502.

It is a sphenic number, since it is the product of 3 distinct primes.

20540202 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20540209) 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 3 ways as a sum of consecutive naturals, for example, 1711678 + ... + 1711689.

It is an arithmetic number, because the mean of its divisors is an integer number (5135052).

Almost surely, 2^20540202 is an apocalyptic number.

20540202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20540202 is a wasteful number, since it uses less digits than its factorization.

20540202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3423372.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 20540202 is about 4532.1299628320. The cubic root of 20540202 is about 273.8639724752.

Adding to 20540202 its reverse (20204502), we get a palindrome (40744704).

The spelling of 20540202 in words is "twenty million, five hundred forty thousand, two hundred two".