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102666151 = 7116312611
BaseRepresentation
bin1100001111010…
…00111110100111
321011011222111001
412013220332213
5202240304101
614104254131
72354435140
oct607507647
9234158431
10102666151
1152a52665
122a471347
1318368203
14d8c6ac7
15902e901
hex61e8fa7

102666151 has 8 divisors (see below), whose sum is σ = 117442944. Its totient is φ = 87916920.

The previous prime is 102666149. The next prime is 102666163. The reversal of 102666151 is 151666201.

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

It is not a de Polignac number, because 102666151 - 21 = 102666149 is a prime.

It is a super-2 number, since 2×1026661512 = 21080677122309602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102666121) 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, 1836 + ... + 14446.

It is an arithmetic number, because the mean of its divisors is an integer number (14680368).

Almost surely, 2102666151 is an apocalyptic number.

102666151 is a deficient number, since it is larger than the sum of its proper divisors (14776793).

102666151 is a wasteful number, since it uses less digits than its factorization.

102666151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13781.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 102666151 is about 10132.4306560667. The cubic root of 102666151 is about 468.2478157058.

Subtracting 102666151 from its reverse (151666201), we obtain a triangular number (49000050 = T9899).

The spelling of 102666151 in words is "one hundred two million, six hundred sixty-six thousand, one hundred fifty-one".

Divisors: 1 7 1163 8141 12611 88277 14666593 102666151