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87930070 = 2510385369
BaseRepresentation
bin1010011110110…
…11010011010110
320010110022101021
411033123103112
5140002230240
612420351354
72115251614
oct517332326
9203408337
1087930070
11456a8188
122554555a
13152a8a37
14b96c6b4
157abd54a
hex53db4d6

87930070 has 16 divisors (see below), whose sum is σ = 159812640. Its totient is φ = 34830144.

The previous prime is 87930067. The next prime is 87930071. The reversal of 87930070 is 7003978.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87930071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41655 + ... + 43714.

It is an arithmetic number, because the mean of its divisors is an integer number (9988290).

Almost surely, 287930070 is an apocalyptic number.

87930070 is a deficient number, since it is larger than the sum of its proper divisors (71882570).

87930070 is a wasteful number, since it uses less digits than its factorization.

87930070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85479.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 87930070 is about 9377.1034973493. The cubic root of 87930070 is about 444.6781664913.

The spelling of 87930070 in words is "eighty-seven million, nine hundred thirty thousand, seventy".

Divisors: 1 2 5 10 103 206 515 1030 85369 170738 426845 853690 8793007 17586014 43965035 87930070