201003840 has 168 divisors, whose sum is σ = 701820288. Its totient is φ = 52792320.

The previous prime is 201003833. The next prime is 201003851. The reversal of 201003840 is 48300102.

It is a happy number.

201003840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203989 + ... + 204971.

Almost surely, 2^201003840 is an apocalyptic number.

201003840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201003840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350910144).

201003840 is an abundant number, since it is smaller than the sum of its proper divisors (500816448).

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

201003840 is a wasteful number, since it uses less digits than its factorization.

201003840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077 (or 1064 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 201003840 is about 14177.5823044693. The cubic root of 201003840 is about 585.7803305600.

Adding to 201003840 its reverse (48300102), we get a palindrome (249303942).

The spelling of 201003840 in words is "two hundred one million, three thousand, eight hundred forty".