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89000000 = 265689
BaseRepresentation
bin1010100111000…
…00100001000000
320012110200001022
411103200201000
5140241000000
612455325012
72130326135
oct523404100
9205420038
1089000000
1146269021
1225980768
1315591a2b
14bb6a58c
157c30585
hex54e0840

89000000 has 98 divisors (see below), whose sum is σ = 223239330. Its totient is φ = 35200000.

The previous prime is 88999979. The next prime is 89000027. The reversal of 89000000 is 98.

Adding to 89000000 its reverse (98), we get a palindrome (89000098).

It can be written as a sum of positive squares in 7 ways, for example, as 85525504 + 3474496 = 9248^2 + 1864^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 999956 + ... + 1000044.

Almost surely, 289000000 is an apocalyptic number.

89000000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111619665).

89000000 is an abundant number, since it is smaller than the sum of its proper divisors (134239330).

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

89000000 is an frugal number, since it uses more digits than its factorization.

89000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 89000000 is about 9433.9811320566. The cubic root of 89000000 is about 446.4745095585.

The spelling of 89000000 in words is "eighty-nine million", and thus it is an aban number and an uban number.

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 89 100 125 160 178 200 250 320 356 400 445 500 625 712 800 890 1000 1250 1424 1600 1780 2000 2225 2500 2848 3125 3560 4000 4450 5000 5696 6250 7120 8000 8900 10000 11125 12500 14240 15625 17800 20000 22250 25000 28480 31250 35600 40000 44500 50000 55625 62500 71200 89000 100000 111250 125000 142400 178000 200000 222500 250000 278125 356000 445000 500000 556250 712000 890000 1000000 1112500 1390625 1780000 2225000 2781250 3560000 4450000 5562500 8900000 11125000 17800000 22250000 44500000 89000000