2921113440 has 216 divisors, whose sum is σ = 11596057200. Its totient is φ = 667666944.

The previous prime is 2921113427. The next prime is 2921113441. The reversal of 2921113440 is 443111292.

It is a happy number.

2921113440 is a `hidden beast` number, since 2 + 9 + 211 + 1 + 3 + 440 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921113441) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 49861 + ... + 91259.

It is an arithmetic number, because the mean of its divisors is an integer number (53685450).

Almost surely, 2^2921113440 is an apocalyptic number.

2921113440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2921113440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5798028600).

2921113440 is an abundant number, since it is smaller than the sum of its proper divisors (8674943760).

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

2921113440 is a wasteful number, since it uses less digits than its factorization.

2921113440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41434 (or 41416 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2921113440 is about 54047.3259283010. The cubic root of 2921113440 is about 1429.4955496522.

The spelling of 2921113440 in words is "two billion, nine hundred twenty-one million, one hundred thirteen thousand, four hundred forty".