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87093078 = 23107293463
BaseRepresentation
bin1010011000011…
…10111101010110
320001212210020120
411030032331112
5134243434303
612350412410
72105164452
oct514167526
9201783216
1087093078
1145186356
1225201106
1315074a87
14b7d1662
1579a5553
hex530ef56

87093078 has 32 divisors (see below), whose sum is σ = 176795136. Its totient is φ = 28599648.

The previous prime is 87093067. The next prime is 87093113. The reversal of 87093078 is 87039078.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187875 + ... + 188337.

It is an arithmetic number, because the mean of its divisors is an integer number (5524848).

Almost surely, 287093078 is an apocalyptic number.

87093078 is an abundant number, since it is smaller than the sum of its proper divisors (89702058).

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

87093078 is a wasteful number, since it uses less digits than its factorization.

87093078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 87093078 is about 9332.3672238077. The cubic root of 87093078 is about 443.2627261754.

The spelling of 87093078 in words is "eighty-seven million, ninety-three thousand, seventy-eight".

Divisors: 1 2 3 6 107 214 293 321 463 586 642 879 926 1389 1758 2778 31351 49541 62702 94053 99082 135659 148623 188106 271318 297246 406977 813954 14515513 29031026 43546539 87093078