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180243230 = 2559305497
BaseRepresentation
bin10101011111001…
…00101100011110
3110120011022020012
422233210230132
5332120240410
625515123222
74316020316
oct1257445436
9416138205
10180243230
1192819452
1250443512
132b45a7cb
1419d1c446
1510c55605
hexabe4b1e

180243230 has 16 divisors (see below), whose sum is σ = 329937840. Its totient is φ = 70875072.

The previous prime is 180243211. The next prime is 180243233. The reversal of 180243230 is 32342081.

It is a junction number, because it is equal to n+sod(n) for n = 180243196 and 180243205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180243233) 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, 152159 + ... + 153338.

It is an arithmetic number, because the mean of its divisors is an integer number (20621115).

Almost surely, 2180243230 is an apocalyptic number.

180243230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180243230 is a deficient number, since it is larger than the sum of its proper divisors (149694610).

180243230 is a wasteful number, since it uses less digits than its factorization.

180243230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305563.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 180243230 is about 13425.4694517548. The cubic root of 180243230 is about 564.8758230769.

The spelling of 180243230 in words is "one hundred eighty million, two hundred forty-three thousand, two hundred thirty".

Divisors: 1 2 5 10 59 118 295 590 305497 610994 1527485 3054970 18024323 36048646 90121615 180243230