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87103238 = 2139313321
BaseRepresentation
bin1010011000100…
…01011100000110
320001220022011212
411030101130012
5134244300423
612350531422
72105236205
oct514213406
9201808155
1087103238
1145192a52
1225206b72
13150795a1
14b7d523c
1579a8578
hex5311706

87103238 has 8 divisors (see below), whose sum is σ = 131595240. Its totient is φ = 43238160.

The previous prime is 87103207. The next prime is 87103241. The reversal of 87103238 is 83230178.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156383 + ... + 156938.

It is an arithmetic number, because the mean of its divisors is an integer number (16449405).

Almost surely, 287103238 is an apocalyptic number.

87103238 is a deficient number, since it is larger than the sum of its proper divisors (44492002).

87103238 is a wasteful number, since it uses less digits than its factorization.

87103238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313462.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 87103238 is about 9332.9115499934. The cubic root of 87103238 is about 443.2799620426.

The spelling of 87103238 in words is "eighty-seven million, one hundred three thousand, two hundred thirty-eight".

Divisors: 1 2 139 278 313321 626642 43551619 87103238