2999381220 has 144 divisors (see below), whose sum is σ = 9971200512. Its totient is φ = 723755520.

The previous prime is 2999381197. The next prime is 2999381221. The reversal of 2999381220 is 221839992.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2999381221) 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 47 ways as a sum of consecutive naturals, for example, 438144 + ... + 444936.

It is an arithmetic number, because the mean of its divisors is an integer number (69244448).

Almost surely, 2^2999381220 is an apocalyptic number.

2999381220 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 2999381220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4985600256).

2999381220 is an abundant number, since it is smaller than the sum of its proper divisors (6971819292).

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

2999381220 is a wasteful number, since it uses less digits than its factorization.

2999381220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7042 (or 7037 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 2999381220 is about 54766.6067964777. The cubic root of 2999381220 is about 1442.1504040236.

The spelling of 2999381220 in words is "two billion, nine hundred ninety-nine million, three hundred eighty-one thousand, two hundred twenty".