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87106880 = 2657371051
BaseRepresentation
bin1010011000100…
…10010101000000
320001220111011202
411030102111000
5134244410010
612351000332
72105252630
oct514222500
9201814152
1087106880
1145195763
12252090a8
131507b143
14b7d66c0
1579a96a5
hex5312540

87106880 has 112 divisors (see below), whose sum is σ = 243693696. Its totient is φ = 29030400.

The previous prime is 87106871. The next prime is 87106889. The reversal of 87106880 is 8860178.

It is an interprime number because it is at equal distance from previous prime (87106871) and next prime (87106889).

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87106889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82355 + ... + 83405.

Almost surely, 287106880 is an apocalyptic number.

87106880 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 87106880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121846848).

87106880 is an abundant number, since it is smaller than the sum of its proper divisors (156586816).

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

87106880 is a wasteful number, since it uses less digits than its factorization.

87106880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112 (or 1102 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 87106880 is about 9333.1066639142. The cubic root of 87106880 is about 443.2861401640.

The spelling of 87106880 in words is "eighty-seven million, one hundred six thousand, eight hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 37 40 56 64 70 74 80 112 140 148 160 185 224 259 280 296 320 370 448 518 560 592 740 1036 1051 1120 1184 1295 1480 2072 2102 2240 2368 2590 2960 4144 4204 5180 5255 5920 7357 8288 8408 10360 10510 11840 14714 16576 16816 20720 21020 29428 33632 36785 38887 41440 42040 58856 67264 73570 77774 82880 84080 117712 147140 155548 168160 194435 235424 272209 294280 311096 336320 388870 470848 544418 588560 622192 777740 1088836 1177120 1244384 1361045 1555480 2177672 2354240 2488768 2722090 3110960 4355344 5444180 6221920 8710688 10888360 12443840 17421376 21776720 43553440 87106880