2991996480 has 224 divisors, whose sum is σ = 10403238528. Its totient is φ = 722534400.

The previous prime is 2991996451. The next prime is 2991996487. The reversal of 2991996480 is 846991992.

It is a self number, because there is not a number n which added to its sum of digits gives 2991996480.

It is not an unprimeable number, because it can be changed into a prime (2991996487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4445424 + ... + 4446096.

Almost surely, 2^2991996480 is an apocalyptic number.

2991996480 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 2991996480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5201619264).

2991996480 is an abundant number, since it is smaller than the sum of its proper divisors (7411242048).

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

2991996480 is a wasteful number, since it uses less digits than its factorization.

2991996480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 57.

The square root of 2991996480 is about 54699.1451487132. The cubic root of 2991996480 is about 1440.9658643578.

The spelling of 2991996480 in words is "two billion, nine hundred ninety-one million, nine hundred ninety-six thousand, four hundred eighty".