41640538 has 8 divisors (see below), whose sum is σ = 62490132. Its totient is φ = 20810496.

The previous prime is 41640523. The next prime is 41640539. The reversal of 41640538 is 83504614.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41563809 + 76729 = 6447^2 + 277^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (41640539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2956 + ... + 9592.

Almost surely, 2^41640538 is an apocalyptic number.

41640538 is a deficient number, since it is larger than the sum of its proper divisors (20849594).

41640538 is a wasteful number, since it uses less digits than its factorization.

41640538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9776.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 41640538 is about 6452.9480084687. The cubic root of 41640538 is about 346.6081556000.

The spelling of 41640538 in words is "forty-one million, six hundred forty thousand, five hundred thirty-eight".