201243444 has 48 divisors (see below), whose sum is σ = 497849856. Its totient is φ = 63158400.

The previous prime is 201243403. The next prime is 201243479. The reversal of 201243444 is 444342102.

It is a happy number.

It is a super-2 number, since 2×201243444² = 80997847505962272, which contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 6454 + ... + 21074.

It is an arithmetic number, because the mean of its divisors is an integer number (10371872).

Almost surely, 2^201243444 is an apocalyptic number.

It is an amenable number.

201243444 is an abundant number, since it is smaller than the sum of its proper divisors (296606412).

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

201243444 is a wasteful number, since it uses less digits than its factorization.

201243444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14696 (or 14694 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 201243444 is about 14186.0298885911. The cubic root of 201243444 is about 586.0129953980.

Adding to 201243444 its reverse (444342102), we get a palindrome (645585546).

The spelling of 201243444 in words is "two hundred one million, two hundred forty-three thousand, four hundred forty-four".