2991098880 has 704 divisors, whose sum is σ = 13299932160. Its totient is φ = 619315200.

The previous prime is 2991098879. The next prime is 2991098899. The reversal of 2991098880 is 888901992.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (704).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10644340 + ... + 10644620.

Almost surely, 2^2991098880 is an apocalyptic number.

2991098880 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 2991098880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6649966080).

2991098880 is an abundant number, since it is smaller than the sum of its proper divisors (10308833280).

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

2991098880 is a wasteful number, since it uses less digits than its factorization.

2991098880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 54.

The square root of 2991098880 is about 54690.9396518290. The cubic root of 2991098880 is about 1440.8217531898.

The spelling of 2991098880 in words is "two billion, nine hundred ninety-one million, ninety-eight thousand, eight hundred eighty".