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1987452060 = 22351119158489
BaseRepresentation
bin111011001110110…
…0001110010011100
312010111202000200120
41312131201302130
513032241431220
6525113554540
7100152030606
oct16635416234
95114660616
101987452060
1192a957170
12475715a50
132589a2b49
1414bd50176
15b9734a40
hex76761c9c

1987452060 has 96 divisors (see below), whose sum is σ = 6390316800. Its totient is φ = 456445440.

The previous prime is 1987452037. The next prime is 1987452073. The reversal of 1987452060 is 602547891.

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 31 ways as a sum of consecutive naturals, for example, 66705 + ... + 91784.

It is an arithmetic number, because the mean of its divisors is an integer number (66565800).

Almost surely, 21987452060 is an apocalyptic number.

1987452060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1987452060 is an abundant number, since it is smaller than the sum of its proper divisors (4402864740).

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

1987452060 is a wasteful number, since it uses less digits than its factorization.

1987452060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158531 (or 158529 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 1987452060 is about 44580.8485787339. The cubic root of 1987452060 is about 1257.2806178849.

The spelling of 1987452060 in words is "one billion, nine hundred eighty-seven million, four hundred fifty-two thousand, sixty".

Divisors: 1 2 3 4 5 6 10 11 12 15 19 20 22 30 33 38 44 55 57 60 66 76 95 110 114 132 165 190 209 220 228 285 330 380 418 570 627 660 836 1045 1140 1254 2090 2508 3135 4180 6270 12540 158489 316978 475467 633956 792445 950934 1584890 1743379 1901868 2377335 3011291 3169780 3486758 4754670 5230137 6022582 6973516 8716895 9033873 9509340 10460274 12045164 15056455 17433790 18067746 20920548 26150685 30112910 33124201 34867580 36135492 45169365 52301370 60225820 66248402 90338730 99372603 104602740 132496804 165621005 180677460 198745206 331242010 397490412 496863015 662484020 993726030 1987452060