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102867987 = 3109314581
BaseRepresentation
bin1100010000110…
…10010000010011
321011120020100110
412020122100103
5202313233422
614112452403
72356235445
oct610322023
9234506313
10102867987
1153080272
122a54a103
1318409041
14d93a495
15906e60c
hex621a413

102867987 has 8 divisors (see below), whose sum is σ = 138416080. Its totient is φ = 67949280.

The previous prime is 102867977. The next prime is 102867991. The reversal of 102867987 is 789768201.

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

It is not a de Polignac number, because 102867987 - 24 = 102867971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102867917) 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, 156964 + ... + 157617.

It is an arithmetic number, because the mean of its divisors is an integer number (17302010).

Almost surely, 2102867987 is an apocalyptic number.

102867987 is a deficient number, since it is larger than the sum of its proper divisors (35548093).

102867987 is a wasteful number, since it uses less digits than its factorization.

102867987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314693.

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 102867987 is about 10142.3856661044. The cubic root of 102867987 is about 468.5544646498.

The spelling of 102867987 in words is "one hundred two million, eight hundred sixty-seven thousand, nine hundred eighty-seven".

Divisors: 1 3 109 327 314581 943743 34289329 102867987