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87796121 = 7109115067
BaseRepresentation
bin1010011101110…
…10100110011001
320010012111122012
411032322212121
5134433433441
612413435305
72114153240
oct516724631
9203174565
1087796121
1145616586
122549bb35
131525ca8a
14b935957
157a939eb
hex53ba999

87796121 has 8 divisors (see below), whose sum is σ = 101259840. Its totient is φ = 74562768.

The previous prime is 87796087. The next prime is 87796139. The reversal of 87796121 is 12169778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87796121 - 26 = 87796057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87796421) 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, 56771 + ... + 58296.

It is an arithmetic number, because the mean of its divisors is an integer number (12657480).

Almost surely, 287796121 is an apocalyptic number.

It is an amenable number.

87796121 is a deficient number, since it is larger than the sum of its proper divisors (13463719).

87796121 is a wasteful number, since it uses less digits than its factorization.

87796121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115183.

The product of its digits is 42336, while the sum is 41.

The square root of 87796121 is about 9369.9584310711. The cubic root of 87796121 is about 444.4522503467.

The spelling of 87796121 in words is "eighty-seven million, seven hundred ninety-six thousand, one hundred twenty-one".

Divisors: 1 7 109 763 115067 805469 12542303 87796121