201163440 has 80 divisors (see below), whose sum is σ = 626174208. Its totient is φ = 53422848.

The previous prime is 201163427. The next prime is 201163453. The reversal of 201163440 is 44361102.

It is an interprime number because it is at equal distance from previous prime (201163427) and next prime (201163453).

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61527 + ... + 64713.

Almost surely, 2^201163440 is an apocalyptic number.

201163440 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 201163440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313087104).

201163440 is an abundant number, since it is smaller than the sum of its proper divisors (425010768).

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

201163440 is a wasteful number, since it uses less digits than its factorization.

201163440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466 (or 3460 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 201163440 is about 14183.2097918631. The cubic root of 201163440 is about 585.9353289377.

The spelling of 201163440 in words is "two hundred one million, one hundred sixty-three thousand, four hundred forty".