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87729380160 = 2635296151659
BaseRepresentation
bin101000110110100010…
…1000001101101000000
322101110000022021021020
41101231011001231000
52414132210131120
6104145145025440
76224005266432
oct1215505015500
9271400267236
1087729380160
1134229a47874
1215004485280
138371595c46
14436351a652
152436d60640
hex146d141b40

87729380160 has 224 divisors, whose sum is σ = 292875004800. Its totient is φ = 22217072640.

The previous prime is 87729380153. The next prime is 87729380203. The reversal of 87729380160 is 6108392778.

It is a congruent 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, 1672411 + ... + 1724069.

It is an arithmetic number, because the mean of its divisors is an integer number (1307477700).

Almost surely, 287729380160 is an apocalyptic number.

87729380160 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 87729380160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146437502400).

87729380160 is an abundant number, since it is smaller than the sum of its proper divisors (205145624640).

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

87729380160 is a wasteful number, since it uses less digits than its factorization.

87729380160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51769 (or 51759 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 87729380160 in words is "eighty-seven billion, seven hundred twenty-nine million, three hundred eighty thousand, one hundred sixty".