3129338220 has 24 divisors (see below), whose sum is σ = 8762147184. Its totient is φ = 834490176.

The previous prime is 3129338203. The next prime is 3129338227. The reversal of 3129338220 is 228339213.

It is not an unprimeable number, because it can be changed into a prime (3129338227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26077759 + ... + 26077878.

It is an arithmetic number, because the mean of its divisors is an integer number (365089466).

Almost surely, 2^3129338220 is an apocalyptic number.

3129338220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3129338220 is an abundant number, since it is smaller than the sum of its proper divisors (5632808964).

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

3129338220 is a wasteful number, since it uses less digits than its factorization.

3129338220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52155649 (or 52155647 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 3129338220 is about 55940.4881995143. The cubic root of 3129338220 is about 1462.6850913379.

The spelling of 3129338220 in words is "three billion, one hundred twenty-nine million, three hundred thirty-eight thousand, two hundred twenty".