41840 has 20 divisors (see below), whose sum is σ = 97464. Its totient is φ = 16704.

The previous prime is 41813. The next prime is 41843. The reversal of 41840 is 4814.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41843) by changing a digit.

41840 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182 + ... + 341.

2⁴¹⁸⁴⁰ is an apocalyptic number.

41840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

41840 is an abundant number, since it is smaller than the sum of its proper divisors (55624).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48732).

41840 is a wasteful number, since it uses less digits than its factorization.

41840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 41840 is about 204.5482828087. The cubic root of 41840 is about 34.7160702582.

The spelling of 41840 in words is "forty-one thousand, eight hundred forty".