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2988279840 = 253571337432
BaseRepresentation
bin1011001000011101…
…1000100000100000
321201020222100022010
42302013120200200
522104444423330
61212305112520
7134023650060
oct26207304040
97636870263
102988279840
1112a3895967
126b4928740
1338813ca30
14204c353a0
1512752b3b0
hexb21d8820

2988279840 has 576 divisors, whose sum is σ = 12181591296. Its totient is φ = 599187456.

The previous prime is 2988279809. The next prime is 2988279851. The reversal of 2988279840 is 489728892.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 69494859 + ... + 69494901.

It is an arithmetic number, because the mean of its divisors is an integer number (21148596).

Almost surely, 22988279840 is an apocalyptic number.

2988279840 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 2988279840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6090795648).

2988279840 is an abundant number, since it is smaller than the sum of its proper divisors (9193311456).

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

2988279840 is a wasteful number, since it uses less digits than its factorization.

2988279840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

The square root of 2988279840 is about 54665.1611174796. The cubic root of 2988279840 is about 1440.3689640961.

The spelling of 2988279840 in words is "two billion, nine hundred eighty-eight million, two hundred seventy-nine thousand, eight hundred forty".