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239620 = 22511981
BaseRepresentation
bin111010100000000100
3110011200211
4322200010
530131440
65045204
72015413
oct724004
9404624
10239620
11154037
12b6804
13850b4
146347a
154aeea
hex3a804

239620 has 12 divisors (see below), whose sum is σ = 503244. Its totient is φ = 95840.

The previous prime is 239611. The next prime is 239623. The reversal of 239620 is 26932.

It can be written as a sum of positive squares in 2 ways, for example, as 173056 + 66564 = 416^2 + 258^2 .

It is a junction number, because it is equal to n+sod(n) for n = 239591 and 239600.

It is not an unprimeable number, because it can be changed into a prime (239623) by changing a digit.

239620 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5971 + ... + 6010.

It is an arithmetic number, because the mean of its divisors is an integer number (41937).

2239620 is an apocalyptic number.

239620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

239620 is an abundant number, since it is smaller than the sum of its proper divisors (263624).

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

239620 is a wasteful number, since it uses less digits than its factorization.

239620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11990 (or 11988 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 239620 is about 489.5099590407. The cubic root of 239620 is about 62.1118342281. Note that the first 3 decimals are identical.

The spelling of 239620 in words is "two hundred thirty-nine thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 11981 23962 47924 59905 119810 239620