Search a number
-
+
87140159 = 1094791669
BaseRepresentation
bin1010011000110…
…10011100111111
320001222011211022
411030122130333
5134301441114
612351414355
72105451641
oct514323477
9201864738
1087140159
1145208767
12252243bb
1315090332
14b804891
1579b448e
hex531a73f

87140159 has 8 divisors (see below), whose sum is σ = 88176000. Its totient is φ = 86108832.

The previous prime is 87140153. The next prime is 87140171. The reversal of 87140159 is 95104178.

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 87140159 - 216 = 87074623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87140153) 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, 51377 + ... + 53045.

It is an arithmetic number, because the mean of its divisors is an integer number (11022000).

Almost surely, 287140159 is an apocalyptic number.

87140159 is a deficient number, since it is larger than the sum of its proper divisors (1035841).

87140159 is a wasteful number, since it uses less digits than its factorization.

87140159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 87140159 is about 9334.8893405332. The cubic root of 87140159 is about 443.3425851550.

The spelling of 87140159 in words is "eighty-seven million, one hundred forty thousand, one hundred fifty-nine".

Divisors: 1 109 479 1669 52211 181921 799451 87140159