40384004020 has 24 divisors (see below), whose sum is σ = 86406531624. Its totient is φ = 15848816256.

The previous prime is 40384003997. The next prime is 40384004029. The reversal of 40384004020 is 2040048304.

It can be written as a sum of positive squares in 4 ways, for example, as 19288765456 + 21095238564 = 138884^2 + 145242^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40384004029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19047999 + ... + 19050118.

It is an arithmetic number, because the mean of its divisors is an integer number (3600272151).

Almost surely, 2^40384004020 is an apocalyptic number.

It is an amenable number.

40384004020 is an abundant number, since it is smaller than the sum of its proper divisors (46022527604).

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

40384004020 is a wasteful number, since it uses less digits than its factorization.

40384004020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38098179 (or 38098177 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The spelling of 40384004020 in words is "forty billion, three hundred eighty-four million, four thousand, twenty".