40641318 has 32 divisors (see below), whose sum is σ = 92759520. Its totient is φ = 13180320.

The previous prime is 40641283. The next prime is 40641331. The reversal of 40641318 is 81314604.

40641318 is a `hidden beast` number, since 4 + 0 + 641 + 3 + 18 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40641291 and 40641300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8173 + ... + 12168.

It is an arithmetic number, because the mean of its divisors is an integer number (2898735).

Almost surely, 2^40641318 is an apocalyptic number.

40641318 is an abundant number, since it is smaller than the sum of its proper divisors (52118202).

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

40641318 is a wasteful number, since it uses less digits than its factorization.

40641318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20389 (or 20383 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 40641318 is about 6375.0543527095. The cubic root of 40641318 is about 343.8132380406.

The spelling of 40641318 in words is "forty million, six hundred forty-one thousand, three hundred eighteen".