40528140 has 96 divisors (see below), whose sum is σ = 121336320. Its totient is φ = 10077696.

The previous prime is 40528097. The next prime is 40528171. The reversal of 40528140 is 4182504.

It is a self number, because there is not a number n which added to its sum of digits gives 40528140.

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 31 ways as a sum of consecutive naturals, for example, 82977 + ... + 83463.

It is an arithmetic number, because the mean of its divisors is an integer number (1263920).

Almost surely, 2^40528140 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 40528140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60668160).

40528140 is an abundant number, since it is smaller than the sum of its proper divisors (80808180).

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

40528140 is a wasteful number, since it uses less digits than its factorization.

40528140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 40528140 is about 6366.1715339755. The cubic root of 40528140 is about 343.4937907935.

The spelling of 40528140 in words is "forty million, five hundred twenty-eight thousand, one hundred forty".