2938721928 has 16 divisors (see below), whose sum is σ = 7346804880. Its totient is φ = 979573968.

The previous prime is 2938721927. The next prime is 2938721959. The reversal of 2938721928 is 8291278392.

It is not an unprimeable number, because it can be changed into a prime (2938721927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61223350 + ... + 61223397.

It is an arithmetic number, because the mean of its divisors is an integer number (459175305).

Almost surely, 2^2938721928 is an apocalyptic number.

It is an amenable number.

2938721928 is an abundant number, since it is smaller than the sum of its proper divisors (4408082952).

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

2938721928 is a wasteful number, since it uses less digits than its factorization.

2938721928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122446756 (or 122446752 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 2938721928 is about 54209.9799667921. The cubic root of 2938721928 is about 1432.3621331155.

It can be divided in two parts, 29387 and 21928, that added together give a palindrome (51315).

The spelling of 2938721928 in words is "two billion, nine hundred thirty-eight million, seven hundred twenty-one thousand, nine hundred twenty-eight".