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2989630080 = 27335315581
BaseRepresentation
bin1011001000110010…
…0010001010000000
321201100111221111000
42302030202022000
522110321130310
61212354052000
7134041302453
oct26214421200
97640457430
102989630080
1112a4628368
126b527a000
133884c34a8
142050a749a
151276e64c0
hexb2322280

2989630080 has 256 divisors, whose sum is σ = 10931788800. Its totient is φ = 771379200.

The previous prime is 2989630067. The next prime is 2989630109. The reversal of 2989630080 is 800369892.

2989630080 is a `hidden beast` number, since 2 + 9 + 8 + 9 + 630 + 0 + 8 + 0 = 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 31 ways as a sum of consecutive naturals, for example, 532890 + ... + 538470.

It is an arithmetic number, because the mean of its divisors is an integer number (42702300).

Almost surely, 22989630080 is an apocalyptic number.

2989630080 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 2989630080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5465894400).

2989630080 is an abundant number, since it is smaller than the sum of its proper divisors (7942158720).

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

2989630080 is a wasteful number, since it uses less digits than its factorization.

2989630080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5640 (or 5622 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 2989630080 is about 54677.5098189374. The cubic root of 2989630080 is about 1440.5858727129.

The spelling of 2989630080 in words is "two billion, nine hundred eighty-nine million, six hundred thirty thousand, eighty".