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102008971 = 437323327
BaseRepresentation
bin1100001010010…
…00100010001011
321002221121000001
412011020202023
5202103241341
614042223431
72346030151
oct605104213
9232847001
10102008971
1152643939
122a1b4b77
131819804c
14d7953d1
158e4ed31
hex614888b

102008971 has 4 divisors (see below), whose sum is σ = 102036672. Its totient is φ = 101981272.

The previous prime is 102008969. The next prime is 102008981. The reversal of 102008971 is 179800201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179800201 = 725685743.

It is a cyclic number.

It is not a de Polignac number, because 102008971 - 21 = 102008969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102008981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7291 + ... + 16036.

It is an arithmetic number, because the mean of its divisors is an integer number (25509168).

Almost surely, 2102008971 is an apocalyptic number.

102008971 is a deficient number, since it is larger than the sum of its proper divisors (27701).

102008971 is an equidigital number, since it uses as much as digits as its factorization.

102008971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27700.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 102008971 is about 10099.9490592775. The cubic root of 102008971 is about 467.2465702970.

The spelling of 102008971 in words is "one hundred two million, eight thousand, nine hundred seventy-one".

Divisors: 1 4373 23327 102008971