40568520 has 64 divisors (see below), whose sum is σ = 124312320. Its totient is φ = 10586624.

The previous prime is 40568519. The next prime is 40568597. The reversal of 40568520 is 2586504.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 2044 + ... + 9236.

It is an arithmetic number, because the mean of its divisors is an integer number (1942380).

Almost surely, 2^40568520 is an apocalyptic number.

40568520 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 40568520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62156160).

40568520 is an abundant number, since it is smaller than the sum of its proper divisors (83743800).

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

40568520 is a wasteful number, since it uses less digits than its factorization.

40568520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7254 (or 7250 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 40568520 is about 6369.3421952349. The cubic root of 40568520 is about 343.6078323401.

The spelling of 40568520 in words is "forty million, five hundred sixty-eight thousand, five hundred twenty".