41840640 has 156 divisors (see below), whose sum is σ = 145668744. Its totient is φ = 11108352.

The previous prime is 41840609. The next prime is 41840647. The reversal of 41840640 is 4604814.

41840640 is a `hidden beast` number, since 4 + 18 + 4 + 0 + 640 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41840647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184207 + ... + 184433.

It is an arithmetic number, because the mean of its divisors is an integer number (933774).

Almost surely, 2^41840640 is an apocalyptic number.

41840640 is a gapful number since it is divisible by the number (40) 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 41840640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72834372).

41840640 is an abundant number, since it is smaller than the sum of its proper divisors (103828104).

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

41840640 is a wasteful number, since it uses less digits than its factorization.

41840640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 41840640 is about 6468.4341227224. The cubic root of 41840640 is about 347.1624726724.

The spelling of 41840640 in words is "forty-one million, eight hundred forty thousand, six hundred forty".