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289507060 = 22514475353
BaseRepresentation
bin10001010000011…
…000011011110100
3202011202111000201
4101100120123310
51043103211220
644421050244
710113524623
oct2120303364
9664674021
10289507060
11139467a37
1280b56984
1347c95a6b
142a6416ba
151a639d0a
hex114186f4

289507060 has 12 divisors (see below), whose sum is σ = 607964868. Its totient is φ = 115802816.

The previous prime is 289507051. The next prime is 289507061. The reversal of 289507060 is 60705982.

It can be written as a sum of positive squares in 2 ways, for example, as 224640144 + 64866916 = 14988^2 + 8054^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289507061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7237657 + ... + 7237696.

It is an arithmetic number, because the mean of its divisors is an integer number (50663739).

Almost surely, 2289507060 is an apocalyptic number.

289507060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289507060 is an abundant number, since it is smaller than the sum of its proper divisors (318457808).

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

289507060 is a wasteful number, since it uses less digits than its factorization.

289507060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14475362 (or 14475360 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 289507060 is about 17014.9069935748. The cubic root of 289507060 is about 661.5353450852.

The spelling of 289507060 in words is "two hundred eighty-nine million, five hundred seven thousand, sixty".

Divisors: 1 2 4 5 10 20 14475353 28950706 57901412 72376765 144753530 289507060