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2028810984 = 233787910729
BaseRepresentation
bin111100011101101…
…0011001011101000
312020101120021110120
41320323103023220
513123333422414
6533152243240
7101163415554
oct17073231350
95211507416
102028810984
119512357a2
12487540520
13264424095
14153638864
15bd1a42a9
hex78ed32e8

2028810984 has 32 divisors (see below), whose sum is σ = 5073144000. Its totient is φ = 676121472.

The previous prime is 2028810947. The next prime is 2028811019. The reversal of 2028810984 is 4890188202.

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 7 ways as a sum of consecutive naturals, for example, 183732 + ... + 194460.

It is an arithmetic number, because the mean of its divisors is an integer number (158535750).

Almost surely, 22028810984 is an apocalyptic number.

2028810984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2028810984 is an abundant number, since it is smaller than the sum of its proper divisors (3044333016).

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

2028810984 is a wasteful number, since it uses less digits than its factorization.

2028810984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18617 (or 18613 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 2028810984 is about 45042.3243627591. The cubic root of 2028810984 is about 1265.9421569873.

The spelling of 2028810984 in words is "two billion, twenty-eight million, eight hundred ten thousand, nine hundred eighty-four".

Divisors: 1 2 3 4 6 8 12 24 7879 10729 15758 21458 23637 31516 32187 42916 47274 63032 64374 85832 94548 128748 189096 257496 84533791 169067582 253601373 338135164 507202746 676270328 1014405492 2028810984