201341440 has 40 divisors (see below), whose sum is σ = 482753700. Its totient is φ = 80535552.

The previous prime is 201341381. The next prime is 201341443. The reversal of 201341440 is 44143102.

It can be written as a sum of positive squares in 2 ways, for example, as 193321216 + 8020224 = 13904^2 + 2832^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×201341440² = 81076750922547200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201341443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36765 + ... + 41884.

Almost surely, 2^201341440 is an apocalyptic number.

201341440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201341440 is an abundant number, since it is smaller than the sum of its proper divisors (281412260).

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

201341440 is an frugal number, since it uses more digits than its factorization.

201341440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78672 (or 78656 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 201341440 is about 14189.4834296390. The cubic root of 201341440 is about 586.1081001287.

Adding to 201341440 its reverse (44143102), we get a palindrome (245484542).

The spelling of 201341440 in words is "two hundred one million, three hundred forty-one thousand, four hundred forty".