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97188413 = 721983437
BaseRepresentation
bin1011100101011…
…11101000111101
320202212200102212
411302233220331
5144340012123
613351030205
72260042100
oct562575075
9222780385
1097188413
114a951103
122866b365
131719ab4a
14cc9c737
1587eb878
hex5cafa3d

97188413 has 6 divisors (see below), whose sum is σ = 113055966. Its totient is φ = 83304312.

The previous prime is 97188389. The next prime is 97188463. The reversal of 97188413 is 31488179.

It can be written as a sum of positive squares in only one way, i.e., 93180409 + 4008004 = 9653^2 + 2002^2 .

It is not a de Polignac number, because 97188413 - 214 = 97172029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97188463) 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 5 ways as a sum of consecutive naturals, for example, 991670 + ... + 991767.

It is an arithmetic number, because the mean of its divisors is an integer number (18842661).

Almost surely, 297188413 is an apocalyptic number.

It is an amenable number.

97188413 is a deficient number, since it is larger than the sum of its proper divisors (15867553).

97188413 is a wasteful number, since it uses less digits than its factorization.

97188413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983451 (or 1983444 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 97188413 is about 9858.4183822761. The cubic root of 97188413 is about 459.7673886949.

The spelling of 97188413 in words is "ninety-seven million, one hundred eighty-eight thousand, four hundred thirteen".

Divisors: 1 7 49 1983437 13884059 97188413