201840006 has 16 divisors (see below), whose sum is σ = 411297264. Its totient is φ = 66010464.

The previous prime is 201839999. The next prime is 201840013. The reversal of 201840006 is 600048102.

It is an interprime number because it is at equal distance from previous prime (201839999) and next prime (201840013).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 317041 + ... + 317676.

It is an arithmetic number, because the mean of its divisors is an integer number (25706079).

Almost surely, 2^201840006 is an apocalyptic number.

201840006 is an abundant number, since it is smaller than the sum of its proper divisors (209457258).

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

201840006 is a wasteful number, since it uses less digits than its factorization.

201840006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634775.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 201840006 is about 14207.0407193053. The cubic root of 201840006 is about 586.5914791872.

Adding to 201840006 its reverse (600048102), we get a palindrome (801888108).

It can be divided in two parts, 2018 and 40006, that added together give a palindrome (42024).

The spelling of 201840006 in words is "two hundred one million, eight hundred forty thousand, six".