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671230 = 25743223
BaseRepresentation
bin10100011110111111110
31021002202101
42203313332
5132434410
622215314
75463640
oct2436776
91232671
10671230
1141933a
1228453a
131a66a1
14136890
15d3d3a
hexa3dfe

671230 has 32 divisors (see below), whose sum is σ = 1419264. Its totient is φ = 223776.

The previous prime is 671219. The next prime is 671233. The reversal of 671230 is 32176.

671230 is nontrivially palindromic in base 13.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 671198 and 671207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671233) by changing a digit.

671230 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 15 ways as a sum of consecutive naturals, for example, 2899 + ... + 3121.

It is an arithmetic number, because the mean of its divisors is an integer number (44352).

2671230 is an apocalyptic number.

671230 is an abundant number, since it is smaller than the sum of its proper divisors (748034).

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

671230 is a wasteful number, since it uses less digits than its factorization.

671230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 671230 is about 819.2862747538. The cubic root of 671230 is about 87.5569153517.

The spelling of 671230 in words is "six hundred seventy-one thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 35 43 70 86 215 223 301 430 446 602 1115 1505 1561 2230 3010 3122 7805 9589 15610 19178 47945 67123 95890 134246 335615 671230