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289549060 = 22514477453
BaseRepresentation
bin10001010000100…
…010101100000100
3202011211121122021
4101100202230010
51043111032220
644422012524
710114061233
oct2120425404
9664747567
10289549060
11139496549
1280b77144
1347cabc08
142a652b1a
151a6474aa
hex11422b04

289549060 has 12 divisors (see below), whose sum is σ = 608053068. Its totient is φ = 115819616.

The previous prime is 289549033. The next prime is 289549081. The reversal of 289549060 is 60945982.

It can be written as a sum of positive squares in 2 ways, for example, as 191102976 + 98446084 = 13824^2 + 9922^2 .

It is a junction number, because it is equal to n+sod(n) for n = 289548998 and 289549016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7238707 + ... + 7238746.

It is an arithmetic number, because the mean of its divisors is an integer number (50671089).

Almost surely, 2289549060 is an apocalyptic number.

289549060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289549060 is an abundant number, since it is smaller than the sum of its proper divisors (318504008).

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

289549060 is a wasteful number, since it uses less digits than its factorization.

289549060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14477462 (or 14477460 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 289549060 is about 17016.1411606745. The cubic root of 289549060 is about 661.5673341048.

The spelling of 289549060 in words is "two hundred eighty-nine million, five hundred forty-nine thousand, sixty".

Divisors: 1 2 4 5 10 20 14477453 28954906 57909812 72387265 144774530 289549060