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97348981 = 929104789
BaseRepresentation
bin1011100110101…
…10110101110101
320210011211200211
411303112311311
5144410131411
613354305421
72261311162
oct563266565
9223154624
1097348981
114aa50804
1228728271
1317225c62
14cd01069
15882e221
hex5cd6d75

97348981 has 4 divisors (see below), whose sum is σ = 97454700. Its totient is φ = 97243264.

The previous prime is 97348973. The next prime is 97349011. The reversal of 97348981 is 18984379.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1602756 + 95746225 = 1266^2 + 9785^2 .

It is a cyclic number.

It is not a de Polignac number, because 97348981 - 23 = 97348973 is a prime.

It is a super-2 number, since 2×973489812 = 18953648203476722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97340981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51466 + ... + 53323.

It is an arithmetic number, because the mean of its divisors is an integer number (24363675).

Almost surely, 297348981 is an apocalyptic number.

It is an amenable number.

97348981 is a deficient number, since it is larger than the sum of its proper divisors (105719).

97348981 is a wasteful number, since it uses less digits than its factorization.

97348981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105718.

The product of its digits is 435456, while the sum is 49.

The square root of 97348981 is about 9866.5587212564. The cubic root of 97348981 is about 460.0204480513.

The spelling of 97348981 in words is "ninety-seven million, three hundred forty-eight thousand, nine hundred eighty-one".

Divisors: 1 929 104789 97348981