2921420928 has 64 divisors (see below), whose sum is σ = 7800429600. Its totient is φ = 968736768.

The previous prime is 2921420911. The next prime is 2921420977. The reversal of 2921420928 is 8290241292.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54403 + ... + 93821.

Almost surely, 2^2921420928 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 2921420928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3900214800).

2921420928 is an abundant number, since it is smaller than the sum of its proper divisors (4879008672).

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

2921420928 is a wasteful number, since it uses less digits than its factorization.

2921420928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39629 (or 39617 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 2921420928 is about 54050.1704715166. The cubic root of 2921420928 is about 1429.5457060183.

The spelling of 2921420928 in words is "two billion, nine hundred twenty-one million, four hundred twenty thousand, nine hundred twenty-eight".