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102881868 = 22361140549
BaseRepresentation
bin1100010000111…
…01101001001100
321011120221101120
412020131221030
5202314204433
614113040540
72356324065
oct610355114
9234527346
10102881868
115308a741
122a556150
131841245b
14d94156c
1590737b3
hex621da4c

102881868 has 24 divisors (see below), whose sum is σ = 243994800. Its totient is φ = 33731520.

The previous prime is 102881837. The next prime is 102881881. The reversal of 102881868 is 868188201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69543 + ... + 71006.

It is an arithmetic number, because the mean of its divisors is an integer number (10166450).

Almost surely, 2102881868 is an apocalyptic number.

It is an amenable number.

102881868 is an abundant number, since it is smaller than the sum of its proper divisors (141112932).

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

102881868 is a wasteful number, since it uses less digits than its factorization.

102881868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140617 (or 140615 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 42.

The square root of 102881868 is about 10143.0699494778. The cubic root of 102881868 is about 468.5755392723.

The spelling of 102881868 in words is "one hundred two million, eight hundred eighty-one thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 61 122 183 244 366 732 140549 281098 421647 562196 843294 1686588 8573489 17146978 25720467 34293956 51440934 102881868