201240036 has 72 divisors (see below), whose sum is σ = 520097760. Its totient is φ = 65594496.

The previous prime is 201240029. The next prime is 201240047. The reversal of 201240036 is 630042102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 342535 + ... + 343121.

It is an arithmetic number, because the mean of its divisors is an integer number (7223580).

Almost surely, 2^201240036 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 201240036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260048880).

201240036 is an abundant number, since it is smaller than the sum of its proper divisors (318857724).

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

201240036 is a wasteful number, since it uses less digits than its factorization.

201240036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 788 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 201240036 is about 14185.9097699090. The cubic root of 201240036 is about 586.0096873920.

Adding to 201240036 its reverse (630042102), we get a palindrome (831282138).

The spelling of 201240036 in words is "two hundred one million, two hundred forty thousand, thirty-six".