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90608453 = 1317409993
BaseRepresentation
bin1010110011010…
…01001101000101
320022111101102122
411121221031011
5141143432303
612554015325
72150105405
oct531511505
9208441378
1090608453
1147167521
1226417545
1315a05b90
14c068805
157e4be38
hex5669345

90608453 has 8 divisors (see below), whose sum is σ = 103318488. Its totient is φ = 78718464.

The previous prime is 90608447. The next prime is 90608489. The reversal of 90608453 is 35480609.

It can be written as a sum of positive squares in 4 ways, for example, as 16129 + 90592324 = 127^2 + 9518^2 .

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 90608453 - 24 = 90608437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90608423) 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 7 ways as a sum of consecutive naturals, for example, 204776 + ... + 205217.

It is an arithmetic number, because the mean of its divisors is an integer number (12914811).

Almost surely, 290608453 is an apocalyptic number.

It is an amenable number.

90608453 is a deficient number, since it is larger than the sum of its proper divisors (12710035).

90608453 is a wasteful number, since it uses less digits than its factorization.

90608453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410023.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 90608453 is about 9518.8472516371. The cubic root of 90608453 is about 449.1481051683.

The spelling of 90608453 in words is "ninety million, six hundred eight thousand, four hundred fifty-three".

Divisors: 1 13 17 221 409993 5329909 6969881 90608453