40383820 has 12 divisors (see below), whose sum is σ = 84806064. Its totient is φ = 16153520.

The previous prime is 40383803. The next prime is 40383829. The reversal of 40383820 is 2838304.

It is not an unprimeable number, because it can be changed into a prime (40383829) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1009576 + ... + 1009615.

It is an arithmetic number, because the mean of its divisors is an integer number (7067172).

Almost surely, 2^40383820 is an apocalyptic number.

It is an amenable number.

40383820 is an abundant number, since it is smaller than the sum of its proper divisors (44422244).

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

40383820 is a wasteful number, since it uses less digits than its factorization.

40383820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019200 (or 2019198 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 40383820 is about 6354.8265121874. The cubic root of 40383820 is about 343.0855807328.

The spelling of 40383820 in words is "forty million, three hundred eighty-three thousand, eight hundred twenty".