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2991889148 = 22898404183
BaseRepresentation
bin1011001001010100…
…1001101011111100
321201111202201100012
42302111021223330
522111410423043
61212514322352
7134066431613
oct26225115374
97644681305
102991889148
1112a5930666
126b5b893b8
13388b04811
142054d487a
151279e0a18
hexb2549afc

2991889148 has 12 divisors (see below), whose sum is σ = 5294635920. Its totient is φ = 1479136032.

The previous prime is 2991889129. The next prime is 2991889163. The reversal of 2991889148 is 8419881992.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4201736 + ... + 4202447.

It is an arithmetic number, because the mean of its divisors is an integer number (441219660).

Almost surely, 22991889148 is an apocalyptic number.

It is an amenable number.

2991889148 is a deficient number, since it is larger than the sum of its proper divisors (2302746772).

2991889148 is a wasteful number, since it uses less digits than its factorization.

2991889148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8404276 (or 8404274 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 59.

The square root of 2991889148 is about 54698.1640276893. The cubic root of 2991889148 is about 1440.9486335446.

The spelling of 2991889148 in words is "two billion, nine hundred ninety-one million, eight hundred eighty-nine thousand, one hundred forty-eight".

Divisors: 1 2 4 89 178 356 8404183 16808366 33616732 747972287 1495944574 2991889148