40329128 has 32 divisors (see below), whose sum is σ = 87225600. Its totient is φ = 17122752.

The previous prime is 40329089. The next prime is 40329139. The reversal of 40329128 is 82192304.

It is a self number, because there is not a number n which added to its sum of digits gives 40329128.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2801 + ... + 9407.

It is an arithmetic number, because the mean of its divisors is an integer number (2725800).

Almost surely, 2^40329128 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 40329128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43612800).

40329128 is an abundant number, since it is smaller than the sum of its proper divisors (46896472).

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

40329128 is a wasteful number, since it uses less digits than its factorization.

40329128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6729 (or 6725 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 40329128 is about 6350.5218683192. The cubic root of 40329128 is about 342.9306299489.

The spelling of 40329128 in words is "forty million, three hundred twenty-nine thousand, one hundred twenty-eight".