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102214387 = 1121723779
BaseRepresentation
bin1100001011110…
…10101011110011
321010100000210001
412011322223303
5202131330022
614050450431
72350544062
oct605725363
9233300701
10102214387
1152774200
122a293a17
131823a6b2
14d80a1d9
158e90b27
hex617aaf3

102214387 has 36 divisors (see below), whose sum is σ = 124126240. Its totient is φ = 84015360.

The previous prime is 102214367. The next prime is 102214391. The reversal of 102214387 is 783412201.

It is not a de Polignac number, because 102214387 - 223 = 93825779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102214367) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1293814 + ... + 1293892.

Almost surely, 2102214387 is an apocalyptic number.

102214387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

102214387 is a deficient number, since it is larger than the sum of its proper divisors (21911853).

102214387 is a wasteful number, since it uses less digits than its factorization.

102214387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 102214387 is about 10110.1131052031. The cubic root of 102214387 is about 467.5599923011.

Adding to 102214387 its reverse (783412201), we get a palindrome (885626588).

The spelling of 102214387 in words is "one hundred two million, two hundred fourteen thousand, three hundred eighty-seven".

Divisors: 1 11 17 37 79 121 187 289 407 629 869 1343 2057 2923 3179 4477 6919 9559 10693 14773 22831 32153 34969 49691 76109 117623 162503 251141 353683 546601 844747 1293853 2762551 6012611 9292217 102214387