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87698532080 = 2452234915837
BaseRepresentation
bin101000110101100111…
…1010110011011110000
322101100212021000122202
41101223033112123300
52414101311011310
6104142123522332
76223152136355
oct1215317263360
9271325230582
1087698532080
1134213598195
1214bb60893a8
138368084c43
14435d3aa62c
1524342ba3a5
hex146b3d66f0

87698532080 has 40 divisors (see below), whose sum is σ = 204813474432. Its totient is φ = 34922098944.

The previous prime is 87698532071. The next prime is 87698532107. The reversal of 87698532080 is 8023589678.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 2440079 + ... + 2475758.

Almost surely, 287698532080 is an apocalyptic number.

87698532080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87698532080 is an abundant number, since it is smaller than the sum of its proper divisors (117114942352).

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

87698532080 is a wasteful number, since it uses less digits than its factorization.

87698532080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4916073 (or 4916067 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 87698532080 in words is "eighty-seven billion, six hundred ninety-eight million, five hundred thirty-two thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 223 446 892 1115 1784 2230 3568 4460 8920 17840 4915837 9831674 19663348 24579185 39326696 49158370 78653392 98316740 196633480 393266960 1096231651 2192463302 4384926604 5481158255 8769853208 10962316510 17539706416 21924633020 43849266040 87698532080