3189320040 has 64 divisors (see below), whose sum is σ = 9584308800. Its totient is φ = 849032192.

The previous prime is 3189320033. The next prime is 3189320041. The reversal of 3189320040 is 400239813.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (3189320041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48751 + ... + 93569.

It is an arithmetic number, because the mean of its divisors is an integer number (149754825).

Almost surely, 2^3189320040 is an apocalyptic number.

3189320040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3189320040 is an abundant number, since it is smaller than the sum of its proper divisors (6394988760).

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

3189320040 is a wasteful number, since it uses less digits than its factorization.

3189320040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45426 (or 45422 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 3189320040 is about 56474.0651981066. The cubic root of 3189320040 is about 1471.9713843779.

Adding to 3189320040 its reverse (400239813), we get a palindrome (3589559853).

The spelling of 3189320040 in words is "three billion, one hundred eighty-nine million, three hundred twenty thousand, forty".