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97649305 = 5131502297
BaseRepresentation
bin1011101001000…
…00001010011001
320210202002122221
411310200022121
5144444234210
613404544041
72264001565
oct564401231
9223662587
1097649305
1150136406
1228852021
13172cc870
14cd7c6a5
15888d1da
hex5d20299

97649305 has 8 divisors (see below), whose sum is σ = 126193032. Its totient is φ = 72110208.

The previous prime is 97649281. The next prime is 97649311. The reversal of 97649305 is 50394679.

It can be written as a sum of positive squares in 4 ways, for example, as 1236544 + 96412761 = 1112^2 + 9819^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 97649305 - 215 = 97616537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751084 + ... + 751213.

It is an arithmetic number, because the mean of its divisors is an integer number (15774129).

Almost surely, 297649305 is an apocalyptic number.

It is an amenable number.

97649305 is a deficient number, since it is larger than the sum of its proper divisors (28543727).

97649305 is a wasteful number, since it uses less digits than its factorization.

97649305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502315.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 97649305 is about 9881.7662894849. The cubic root of 97649305 is about 460.4930205491.

The spelling of 97649305 in words is "ninety-seven million, six hundred forty-nine thousand, three hundred five".

Divisors: 1 5 13 65 1502297 7511485 19529861 97649305