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87143357 = 726946279
BaseRepresentation
bin1010011000110…
…11001110111101
320001222100012202
411030123032331
5134302041412
612351441245
72105464160
oct514331675
9201870182
1087143357
1145210104
1225226225
1315091922
14b805ad7
1579b53c2
hex531b3bd

87143357 has 8 divisors (see below), whose sum is σ = 99964800. Its totient is φ = 74415024.

The previous prime is 87143351. The next prime is 87143401. The reversal of 87143357 is 75334178.

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

It is a cyclic number.

It is not a de Polignac number, because 87143357 - 214 = 87126973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87143357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87143351) 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, 21257 + ... + 25022.

It is an arithmetic number, because the mean of its divisors is an integer number (12495600).

Almost surely, 287143357 is an apocalyptic number.

It is an amenable number.

87143357 is a deficient number, since it is larger than the sum of its proper divisors (12821443).

87143357 is a wasteful number, since it uses less digits than its factorization.

87143357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46555.

The product of its digits is 70560, while the sum is 38.

The square root of 87143357 is about 9335.0606318331. The cubic root of 87143357 is about 443.3480085719.

The spelling of 87143357 in words is "eighty-seven million, one hundred forty-three thousand, three hundred fifty-seven".

Divisors: 1 7 269 1883 46279 323953 12449051 87143357