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97008281 = 192268721
BaseRepresentation
bin1011100100000…
…11101010011001
320202112112100022
411302003222121
5144313231111
613343120225
72255361656
oct562035231
9222475308
1097008281
114a838837
12285a3075
1317136b66
14cc52c2d
1587b32db
hex5c83a99

97008281 has 6 divisors (see below), whose sum is σ = 102383082. Its totient is φ = 91902240.

The previous prime is 97008271. The next prime is 97008323. The reversal of 97008281 is 18280079.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 76387600 + 20620681 = 8740^2 + 4541^2 .

It is not a de Polignac number, because 97008281 - 210 = 97007257 is a prime.

It is a super-2 number, since 2×970082812 = 18821213165149922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97008221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 134000 + ... + 134721.

It is an arithmetic number, because the mean of its divisors is an integer number (17063847).

Almost surely, 297008281 is an apocalyptic number.

It is an amenable number.

97008281 is a deficient number, since it is larger than the sum of its proper divisors (5374801).

97008281 is a wasteful number, since it uses less digits than its factorization.

97008281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268759 (or 268740 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 97008281 is about 9849.2781969036. The cubic root of 97008281 is about 459.4831640095.

The spelling of 97008281 in words is "ninety-seven million, eight thousand, two hundred eighty-one".

Divisors: 1 19 361 268721 5105699 97008281