201689104 has 40 divisors (see below), whose sum is σ = 412394240. Its totient is φ = 95292288.

The previous prime is 201689099. The next prime is 201689129. The reversal of 201689104 is 401986102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183982 + ... + 185074.

It is an arithmetic number, because the mean of its divisors is an integer number (10309856).

Almost surely, 2^201689104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201689104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206197120).

201689104 is an abundant number, since it is smaller than the sum of its proper divisors (210705136).

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

201689104 is a wasteful number, since it uses less digits than its factorization.

201689104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727 (or 1721 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 201689104 is about 14201.7289088336. The cubic root of 201689104 is about 586.4452579336.

The spelling of 201689104 in words is "two hundred one million, six hundred eighty-nine thousand, one hundred four".