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289538082 = 23216085449
BaseRepresentation
bin10001010000100…
…000000000100010
3202011211001120200
4101100200000202
51043110204312
644421450030
710114014231
oct2120400042
9664731520
10289538082
11139489279
1280b70916
1347ca6c12
142a64cb18
151a6440dc
hex11420022

289538082 has 12 divisors (see below), whose sum is σ = 627332550. Its totient is φ = 96512688.

The previous prime is 289538057. The next prime is 289538083. The reversal of 289538082 is 280835982.

It can be written as a sum of positive squares in only one way, i.e., 281534841 + 8003241 = 16779^2 + 2829^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (289538083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8042707 + ... + 8042742.

Almost surely, 2289538082 is an apocalyptic number.

289538082 is an abundant number, since it is smaller than the sum of its proper divisors (337794468).

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

289538082 is a wasteful number, since it uses less digits than its factorization.

289538082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16085457 (or 16085454 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 289538082 is about 17015.8185815435. The cubic root of 289538082 is about 661.5589730830.

The spelling of 289538082 in words is "two hundred eighty-nine million, five hundred thirty-eight thousand, eighty-two".

Divisors: 1 2 3 6 9 18 16085449 32170898 48256347 96512694 144769041 289538082