2921398272 has 272 divisors, whose sum is σ = 9395169280. Its totient is φ = 891813888.

The previous prime is 2921398267. The next prime is 2921398313. The reversal of 2921398272 is 2728931292.

It is a happy number.

2921398272 is a `hidden beast` number, since 292 + 1 + 3 + 98 + 272 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23003073 + ... + 23003199.

Almost surely, 2^2921398272 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 2921398272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4697584640).

2921398272 is an abundant number, since it is smaller than the sum of its proper divisors (6473771008).

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

2921398272 is an equidigital number, since it uses as much as digits as its factorization.

2921398272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 145 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 2921398272 is about 54049.9608880525. The cubic root of 2921398272 is about 1429.5420105710.

The spelling of 2921398272 in words is "two billion, nine hundred twenty-one million, three hundred ninety-eight thousand, two hundred seventy-two".