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87230193 = 3109266759
BaseRepresentation
bin1010011001100…
…00011011110001
320002010202022220
411030300123301
5134312331233
612353351253
72106305301
oct514603361
9202122286
1087230193
114526a376
1225268529
13150c22cb
14b829601
1579d0eb3
hex53306f1

87230193 has 8 divisors (see below), whose sum is σ = 117374400. Its totient is φ = 57619728.

The previous prime is 87230177. The next prime is 87230207. The reversal of 87230193 is 39103278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87230193 - 24 = 87230177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87230123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133053 + ... + 133706.

It is an arithmetic number, because the mean of its divisors is an integer number (14671800).

Almost surely, 287230193 is an apocalyptic number.

It is an amenable number.

87230193 is a deficient number, since it is larger than the sum of its proper divisors (30144207).

87230193 is a wasteful number, since it uses less digits than its factorization.

87230193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266871.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 87230193 is about 9339.7105415532. The cubic root of 87230193 is about 443.4952211210.

The spelling of 87230193 in words is "eighty-seven million, two hundred thirty thousand, one hundred ninety-three".

Divisors: 1 3 109 327 266759 800277 29076731 87230193