41643540 has 144 divisors (see below), whose sum is σ = 138378240. Its totient is φ = 10091520.

The previous prime is 41643529. The next prime is 41643587. The reversal of 41643540 is 4534614.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94641 + ... + 95079.

It is an arithmetic number, because the mean of its divisors is an integer number (960960).

Almost surely, 2^41643540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 41643540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69189120).

41643540 is an abundant number, since it is smaller than the sum of its proper divisors (96734700).

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

41643540 is a wasteful number, since it uses less digits than its factorization.

41643540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 41643540 is about 6453.1806111405. The cubic root of 41643540 is about 346.6164847645.

It can be divided in two parts, 416 and 43540, that added together give a triangular number (43956 = T₂₉₆).

The spelling of 41643540 in words is "forty-one million, six hundred forty-three thousand, five hundred forty".