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234345189 = 31317933569
BaseRepresentation
bin11011111011111…
…01001011100101
3121022221222011110
431331331023211
5434443021224
635130455233
75543621061
oct1575751345
9538858143
10234345189
11110311011
1266594519
1339720cc0
14231a2aa1
1515890929
hexdf7d2e5

234345189 has 16 divisors (see below), whose sum is σ = 338385600. Its totient is φ = 143402496.

The previous prime is 234345179. The next prime is 234345191. The reversal of 234345189 is 981543432.

It is not a de Polignac number, because 234345189 - 24 = 234345173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234345169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9804 + ... + 23765.

It is an arithmetic number, because the mean of its divisors is an integer number (21149100).

Almost surely, 2234345189 is an apocalyptic number.

It is an amenable number.

234345189 is a deficient number, since it is larger than the sum of its proper divisors (104040411).

234345189 is a wasteful number, since it uses less digits than its factorization.

234345189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33764.

The product of its digits is 103680, while the sum is 39.

The square root of 234345189 is about 15308.3372382503. The cubic root of 234345189 is about 616.5268769416.

The spelling of 234345189 in words is "two hundred thirty-four million, three hundred forty-five thousand, one hundred eighty-nine".

Divisors: 1 3 13 39 179 537 2327 6981 33569 100707 436397 1309191 6008851 18026553 78115063 234345189