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89201605 = 5103173207
BaseRepresentation
bin1010101000100…
…01101111000101
320012211220121011
411110101233011
5140313422410
612503522221
72132125663
oct524215705
9205756534
1089201605
1146396539
1225a59371
131563271c
14bbbdc33
157c7018a
hex5511bc5

89201605 has 8 divisors (see below), whose sum is σ = 108081792. Its totient is φ = 70668048.

The previous prime is 89201603. The next prime is 89201611. The reversal of 89201605 is 50610298.

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 89201605 - 21 = 89201603 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 (89201603) 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, 86089 + ... + 87118.

It is an arithmetic number, because the mean of its divisors is an integer number (13510224).

Almost surely, 289201605 is an apocalyptic number.

It is an amenable number.

89201605 is a deficient number, since it is larger than the sum of its proper divisors (18880187).

89201605 is a wasteful number, since it uses less digits than its factorization.

89201605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173315.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 89201605 is about 9444.6601315241. The cubic root of 89201605 is about 446.8113770247.

The spelling of 89201605 in words is "eighty-nine million, two hundred one thousand, six hundred five".

Divisors: 1 5 103 515 173207 866035 17840321 89201605