41091640 has 32 divisors (see below), whose sum is σ = 93577680. Its totient is φ = 16237312.

The previous prime is 41091629. The next prime is 41091641. The reversal of 41091640 is 4619014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41091641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2869 + ... + 9508.

Almost surely, 2^41091640 is an apocalyptic number.

41091640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

41091640 is an abundant number, since it is smaller than the sum of its proper divisors (52486040).

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

41091640 is a wasteful number, since it uses less digits than its factorization.

41091640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12471 (or 12467 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 41091640 is about 6410.2761250979. The cubic root of 41091640 is about 345.0784390716.

The spelling of 41091640 in words is "forty-one million, ninety-one thousand, six hundred forty".