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379780 = 225171117
BaseRepresentation
bin1011100101110000100
3201021221221
41130232010
544123110
612050124
73141142
oct1345604
9637857
10379780
1123a375
12163944
13103b2b
149c592
15777da
hex5cb84

379780 has 24 divisors (see below), whose sum is σ = 845208. Its totient is φ = 142848.

The previous prime is 379777. The next prime is 379787. The reversal of 379780 is 87973.

It can be written as a sum of positive squares in 4 ways, for example, as 12544 + 367236 = 112^2 + 606^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (379787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219 + ... + 898.

It is an arithmetic number, because the mean of its divisors is an integer number (35217).

2379780 is an apocalyptic number.

It is an amenable number.

379780 is an abundant number, since it is smaller than the sum of its proper divisors (465428).

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

379780 is a wasteful number, since it uses less digits than its factorization.

379780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 379780 is about 616.2629308988. The cubic root of 379780 is about 72.4175837148.

The spelling of 379780 in words is "three hundred seventy-nine thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 1117 2234 4468 5585 11170 18989 22340 37978 75956 94945 189890 379780