41390640 has 60 divisors (see below), whose sum is σ = 139005984. Its totient is φ = 11037312.

The previous prime is 41390633. The next prime is 41390647. The reversal of 41390640 is 4609314.

41390640 is a `hidden beast` number, since 4 + 13 + 9 + 0 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (41390633) and next prime (41390647).

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (41390647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28024 + ... + 29463.

Almost surely, 2^41390640 is an apocalyptic number.

41390640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

41390640 is an abundant number, since it is smaller than the sum of its proper divisors (97615344).

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

41390640 is a wasteful number, since it uses less digits than its factorization.

41390640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57506 (or 57497 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 41390640 is about 6433.5557819918. Note that the first 3 decimals coincide. The cubic root of 41390640 is about 345.9133956344.

Adding to 41390640 its reverse (4609314), we get a palindrome (45999954).

The spelling of 41390640 in words is "forty-one million, three hundred ninety thousand, six hundred forty".