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87708298487040 = 283457111929127157
BaseRepresentation
bin10011111100010100101101…
…111110011010010100000000
3102111112211110010101012220000
4103330110231332122110000
542444003043403041130
6510312345220520000
724321500254153050
oct2374245576322400
9374484403335800
1087708298487040
1125a45975a44230
129a06557850000
1339c2b1ac58b2a
141793166297560
15a217629eb260
hex4fc52df9a500

87708298487040 has 5760 divisors, whose sum is σ = 432162481766400. Its totient is φ = 16433900421120.

The previous prime is 87708298487009. The next prime is 87708298487057. The reversal of 87708298487040 is 4078489280778.

87708298487040 is a `hidden beast` number, since 87 + 7 + 0 + 8 + 29 + 8 + 487 + 0 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (5760).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 87708298487040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 639 ways as a sum of consecutive naturals, for example, 558651582642 + ... + 558651582798.

It is an arithmetic number, because the mean of its divisors is an integer number (75028208640).

Almost surely, 287708298487040 is an apocalyptic number.

87708298487040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87708298487040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216081240883200).

87708298487040 is an abundant number, since it is smaller than the sum of its proper divisors (344454183279360).

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

87708298487040 is a wasteful number, since it uses less digits than its factorization.

87708298487040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 404619264, while the sum is 72.

The spelling of 87708298487040 in words is "eighty-seven trillion, seven hundred eight billion, two hundred ninety-eight million, four hundred eighty-seven thousand, forty".