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87099711384 = 23371927286877
BaseRepresentation
bin101000100011110001…
…1000001111110011000
322022211010110210002110
41101013203001332120
52411340011231014
6104002453032320
76202261221420
oct1210743017630
9268733423073
1087099711384
1133a36575354
1214a696256a0
1382a0cb007a
144303a4d480
1523eb931d59
hex14478c1f98

87099711384 has 64 divisors (see below), whose sum is σ = 261954028800. Its totient is φ = 23575860864.

The previous prime is 87099711371. The next prime is 87099711443. The reversal of 87099711384 is 48311799078.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13640247 + ... + 13646630.

It is an arithmetic number, because the mean of its divisors is an integer number (4093031700).

Almost surely, 287099711384 is an apocalyptic number.

87099711384 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

87099711384 is an abundant number, since it is smaller than the sum of its proper divisors (174854317416).

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

87099711384 is a wasteful number, since it uses less digits than its factorization.

87099711384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27286912 (or 27286908 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 57.

The spelling of 87099711384 in words is "eighty-seven billion, ninety-nine million, seven hundred eleven thousand, three hundred eighty-four".

Divisors: 1 2 3 4 6 7 8 12 14 19 21 24 28 38 42 56 57 76 84 114 133 152 168 228 266 399 456 532 798 1064 1596 3192 27286877 54573754 81860631 109147508 163721262 191008139 218295016 327442524 382016278 518450663 573024417 654885048 764032556 1036901326 1146048834 1528065112 1555351989 2073802652 2292097668 3110703978 3629154641 4147605304 4584195336 6221407956 7258309282 10887463923 12442815912 14516618564 21774927846 29033237128 43549855692 87099711384