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87885484428 = 223719471171619
BaseRepresentation
bin101000111011001100…
…0100001000110001100
322101211220001012001210
41101312120201012030
52414442141000203
6104212442534420
76230612202060
oct1216630410614
9271756035053
1087885484428
11342aa079265
1215048807410
138397a21431
14437a153aa0
1524458e8803
hex147662118c

87885484428 has 96 divisors (see below), whose sum is σ = 251945164800. Its totient is φ = 23282392896.

The previous prime is 87885484397. The next prime is 87885484481. The reversal of 87885484428 is 82448458878.

It is a happy number.

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, 510798 + ... + 660821.

It is an arithmetic number, because the mean of its divisors is an integer number (2624428800).

Almost surely, 287885484428 is an apocalyptic number.

It is an amenable number.

87885484428 is an abundant number, since it is smaller than the sum of its proper divisors (164059680372).

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

87885484428 is a wasteful number, since it uses less digits than its factorization.

87885484428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171699 (or 1171697 counting only the distinct ones).

The product of its digits is 146800640, while the sum is 66.

The spelling of 87885484428 in words is "eighty-seven billion, eight hundred eighty-five million, four hundred eighty-four thousand, four hundred twenty-eight".

Divisors: 1 2 3 4 6 7 12 14 19 21 28 38 42 47 57 76 84 94 114 133 141 188 228 266 282 329 399 532 564 658 798 893 987 1316 1596 1786 1974 2679 3572 3948 5358 6251 10716 12502 18753 25004 37506 75012 1171619 2343238 3514857 4686476 7029714 8201333 14059428 16402666 22260761 24603999 32805332 44521522 49207998 55066093 66782283 89043044 98415996 110132186 133564566 155825327 165198279 220264372 267129132 311650654 330396558 385462651 467475981 623301308 660793116 770925302 934951962 1046255767 1156387953 1541850604 1869903924 2092511534 2312775906 3138767301 4185023068 4625551812 6277534602 7323790369 12555069204 14647580738 21971371107 29295161476 43942742214 87885484428