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90067345 = 521298461
BaseRepresentation
bin1010101111001…
…01000110010001
320021110220011121
411113211012101
5141024123340
612534242241
72142363004
oct527450621
9207426147
1090067345
1146927a25
12261b6381
13158767b4
14bd6753b
157d9194a
hex55e5191

90067345 has 8 divisors (see below), whose sum is σ = 108144360. Its totient is φ = 72011520.

The previous prime is 90067339. The next prime is 90067349. The reversal of 90067345 is 54376009.

It can be written as a sum of positive squares in 4 ways, for example, as 12222016 + 77845329 = 3496^2 + 8823^2 .

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

It is not a de Polignac number, because 90067345 - 23 = 90067337 is a prime.

It is a super-2 number, since 2×900673452 = 16224253270698050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90067345.

It is not an unprimeable number, because it can be changed into a prime (90067349) 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, 6415 + ... + 14875.

It is an arithmetic number, because the mean of its divisors is an integer number (13518045).

Almost surely, 290067345 is an apocalyptic number.

It is an amenable number.

90067345 is a deficient number, since it is larger than the sum of its proper divisors (18077015).

90067345 is a wasteful number, since it uses less digits than its factorization.

90067345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10595.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 90067345 is about 9490.3817099208. The cubic root of 90067345 is about 448.2522246398.

The spelling of 90067345 in words is "ninety million, sixty-seven thousand, three hundred forty-five".

Divisors: 1 5 2129 8461 10645 42305 18013469 90067345