32304040040 has 128 divisors (see below), whose sum is σ = 76989726720. Its totient is φ = 12174624000.

The previous prime is 32304040037. The next prime is 32304040147. The reversal of 32304040040 is 4004040323.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 32304039994 and 32304040021.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17641925 + ... + 17643755.

It is an arithmetic number, because the mean of its divisors is an integer number (601482240).

Almost surely, 2^32304040040 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 32304040040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38494863360).

32304040040 is an abundant number, since it is smaller than the sum of its proper divisors (44685686680).

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

32304040040 is a wasteful number, since it uses less digits than its factorization.

32304040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143 (or 2139 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 32304040040 its reverse (4004040323), we get a palindrome (36308080363).

The spelling of 32304040040 in words is "thirty-two billion, three hundred four million, forty thousand, forty".