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87062880 = 2535315851
BaseRepresentation
bin1010011000001…
…11100101100000
320001211020211010
411030013211200
5134242003010
612350020520
72105010432
oct514074540
9201736733
1087062880
11451656a3
12251a7740
13150640c8
14b7c4652
15799b620
hex5307960

87062880 has 96 divisors (see below), whose sum is σ = 283143168. Its totient is φ = 22464000.

The previous prime is 87062869. The next prime is 87062881. The reversal of 87062880 is 8826078.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87062881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11955 + ... + 17805.

It is an arithmetic number, because the mean of its divisors is an integer number (2949408).

Almost surely, 287062880 is an apocalyptic number.

87062880 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 87062880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141571584).

87062880 is an abundant number, since it is smaller than the sum of its proper divisors (196080288).

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

87062880 is a wasteful number, since it uses less digits than its factorization.

87062880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900 (or 5892 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 87062880 is about 9330.7491660638. The cubic root of 87062880 is about 443.2114890565.

The spelling of 87062880 in words is "eighty-seven million, sixty-two thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 32 40 48 60 62 80 93 96 120 124 155 160 186 240 248 310 372 465 480 496 620 744 930 992 1240 1488 1860 2480 2976 3720 4960 5851 7440 11702 14880 17553 23404 29255 35106 46808 58510 70212 87765 93616 117020 140424 175530 181381 187232 234040 280848 351060 362762 468080 544143 561696 702120 725524 906905 936160 1088286 1404240 1451048 1813810 2176572 2720715 2808480 2902096 3627620 4353144 5441430 5804192 7255240 8706288 10882860 14510480 17412576 21765720 29020960 43531440 87062880