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89280930 = 2353196001
BaseRepresentation
bin1010101001001…
…01000110100010
320012222221102010
411110211012202
5140323442210
612505333350
72132606154
oct524450642
9205887363
1089280930
11464400a2
1225a97256
131565c86b
14bc00ad4
157c88920
hex55251a2

89280930 has 32 divisors (see below), whose sum is σ = 221188608. Its totient is φ = 23040000.

The previous prime is 89280929. The next prime is 89280931. The reversal of 89280930 is 3908298.

It is an interprime number because it is at equal distance from previous prime (89280929) and next prime (89280931).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89280931) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 47071 + ... + 48930.

It is an arithmetic number, because the mean of its divisors is an integer number (6912144).

Almost surely, 289280930 is an apocalyptic number.

89280930 is an abundant number, since it is smaller than the sum of its proper divisors (131907678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89280930 is a wasteful number, since it uses less digits than its factorization.

89280930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96042.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 89280930 is about 9448.8586612352. The cubic root of 89280930 is about 446.9437842512.

The spelling of 89280930 in words is "eighty-nine million, two hundred eighty thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 31 62 93 155 186 310 465 930 96001 192002 288003 480005 576006 960010 1440015 2880030 2976031 5952062 8928093 14880155 17856186 29760310 44640465 89280930