40513168 has 40 divisors (see below), whose sum is σ = 83833920. Its totient is φ = 18910080.

The previous prime is 40513163. The next prime is 40513169. The reversal of 40513168 is 86131504.

It is not an unprimeable number, because it can be changed into a prime (40513163) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20646 + ... + 22522.

It is an arithmetic number, because the mean of its divisors is an integer number (2095848).

Almost surely, 2^40513168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40513168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41916960).

40513168 is an abundant number, since it is smaller than the sum of its proper divisors (43320752).

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

40513168 is a wasteful number, since it uses less digits than its factorization.

40513168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975 (or 1969 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 40513168 is about 6364.9955223865. The cubic root of 40513168 is about 343.4514874914.

The spelling of 40513168 in words is "forty million, five hundred thirteen thousand, one hundred sixty-eight".