201444540 has 48 divisors (see below), whose sum is σ = 615323520. Its totient is φ = 48834880.

The previous prime is 201444461. The next prime is 201444547. The reversal of 201444540 is 45444102.

It is a happy number.

201444540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 201444540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201444547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151950 + ... + 153269.

It is an arithmetic number, because the mean of its divisors is an integer number (12819240).

Almost surely, 2^201444540 is an apocalyptic number.

201444540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201444540 is an abundant number, since it is smaller than the sum of its proper divisors (413878980).

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

201444540 is a wasteful number, since it uses less digits than its factorization.

201444540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305242 (or 305240 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 201444540 is about 14193.1159369604. The cubic root of 201444540 is about 586.2081249650.

Adding to 201444540 its reverse (45444102), we get a palindrome (246888642).

The spelling of 201444540 in words is "two hundred one million, four hundred forty-four thousand, five hundred forty".