40520168 has 32 divisors (see below), whose sum is σ = 82437600. Its totient is φ = 18560448.

The previous prime is 40520167. The next prime is 40520213. The reversal of 40520168 is 86102504.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (40520167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13055 + ... + 15857.

It is an arithmetic number, because the mean of its divisors is an integer number (2576175).

Almost surely, 2^40520168 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 40520168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41218800).

40520168 is an abundant number, since it is smaller than the sum of its proper divisors (41917432).

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

40520168 is a wasteful number, since it uses less digits than its factorization.

40520168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961 (or 2957 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 40520168 is about 6365.5453811908. The cubic root of 40520168 is about 343.4712672493.

The spelling of 40520168 in words is "forty million, five hundred twenty thousand, one hundred sixty-eight".