40031850 has 48 divisors (see below), whose sum is σ = 102493440. Its totient is φ = 10329600.

The previous prime is 40031843. The next prime is 40031851. The reversal of 40031850 is 5813004.

40031850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40031851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346 + ... + 8954.

It is an arithmetic number, because the mean of its divisors is an integer number (2135280).

Almost surely, 2^40031850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40031850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51246720).

40031850 is an abundant number, since it is smaller than the sum of its proper divisors (62461590).

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

40031850 is a wasteful number, since it uses less digits than its factorization.

40031850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8655 (or 8650 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 40031850 is about 6327.0727828910. The cubic root of 40031850 is about 342.0859364770.

Adding to 40031850 its reverse (5813004), we get a palindrome (45844854).

The spelling of 40031850 in words is "forty million, thirty-one thousand, eight hundred fifty".