41651640 has 192 divisors, whose sum is σ = 144050400. Its totient is φ = 10423296.

The previous prime is 41651639. The next prime is 41651647. The reversal of 41651640 is 4615614.

41651640 is a `hidden beast` number, since 4 + 1 + 651 + 6 + 4 + 0 = 666.

It is a super-2 number, since 2×41651640² = 3469718229379200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41651647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 705931 + ... + 705989.

Almost surely, 2^41651640 is an apocalyptic number.

41651640 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 41651640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72025200).

41651640 is an abundant number, since it is smaller than the sum of its proper divisors (102398760).

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

41651640 is a wasteful number, since it uses less digits than its factorization.

41651640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 41651640 is about 6453.8081781224. The cubic root of 41651640 is about 346.6389565293.

The spelling of 41651640 in words is "forty-one million, six hundred fifty-one thousand, six hundred forty".