41961640 has 96 divisors (see below), whose sum is σ = 111628800. Its totient is φ = 14152320.

The previous prime is 41961617. The next prime is 41961643. The reversal of 41961640 is 4616914.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41961643) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 154705 + ... + 154975.

It is an arithmetic number, because the mean of its divisors is an integer number (1162800).

Almost surely, 2^41961640 is an apocalyptic number.

41961640 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 41961640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55814400).

41961640 is an abundant number, since it is smaller than the sum of its proper divisors (69667160).

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

41961640 is a wasteful number, since it uses less digits than its factorization.

41961640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 41961640 is about 6477.7804840856. The cubic root of 41961640 is about 347.4968065542.

The spelling of 41961640 in words is "forty-one million, nine hundred sixty-one thousand, six hundred forty".