40329018 has 24 divisors (see below), whose sum is σ = 87714900. Its totient is φ = 13391424.

The previous prime is 40329017. The next prime is 40329071. The reversal of 40329018 is 81092304.

It can be written as a sum of positive squares in 2 ways, for example, as 31843449 + 8485569 = 5643^2 + 2913^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40328982 and 40329000.

It is not an unprimeable number, because it can be changed into a prime (40329017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 678 + ... + 9006.

Almost surely, 2^40329018 is an apocalyptic number.

40329018 is an abundant number, since it is smaller than the sum of its proper divisors (47385882).

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

40329018 is a wasteful number, since it uses less digits than its factorization.

40329018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8606 (or 8603 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 40329018 is about 6350.5132076077. The cubic root of 40329018 is about 342.9303181610.

The spelling of 40329018 in words is "forty million, three hundred twenty-nine thousand, eighteen".