2991628080 has 400 divisors, whose sum is σ = 12010641984. Its totient is φ = 675993600.

The previous prime is 2991628069. The next prime is 2991628153. The reversal of 2991628080 is 808261992.

2991628080 is a `hidden beast` number, since 299 + 1 + 6 + 280 + 80 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4581034 + ... + 4581686.

Almost surely, 2^2991628080 is an apocalyptic number.

2991628080 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 2991628080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6005320992).

2991628080 is an abundant number, since it is smaller than the sum of its proper divisors (9019013904).

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

2991628080 is a wasteful number, since it uses less digits than its factorization.

2991628080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 2991628080 is about 54695.7775335537. Note that the first 3 decimals coincide. The cubic root of 2991628080 is about 1440.9067206147.

The spelling of 2991628080 in words is "two billion, nine hundred ninety-one million, six hundred twenty-eight thousand, eighty".