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87873971410 = 258787397141
BaseRepresentation
bin101000111010110110…
…0100110010011010010
322101211002101021011201
41101311230212103102
52414431214041120
6104211352101414
76230412301321
oct1216554462322
9271732337151
1087873971410
11342a3625375
121504499486a
13839551ccb4
1443787d80b8
1524448c240a
hex1475b264d2

87873971410 has 8 divisors (see below), whose sum is σ = 158173148556. Its totient is φ = 35149588560.

The previous prime is 87873971389. The next prime is 87873971411. The reversal of 87873971410 is 1417937878.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 73708449049 + 14165522361 = 271493^2 + 119019^2 .

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

It is not an unprimeable number, because it can be changed into a prime (87873971411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4393698561 + ... + 4393698580.

Almost surely, 287873971410 is an apocalyptic number.

87873971410 is a deficient number, since it is larger than the sum of its proper divisors (70299177146).

87873971410 is a wasteful number, since it uses less digits than its factorization.

87873971410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8787397148.

The product of its (nonzero) digits is 2370816, while the sum is 55.

The spelling of 87873971410 in words is "eighty-seven billion, eight hundred seventy-three million, nine hundred seventy-one thousand, four hundred ten".

Divisors: 1 2 5 10 8787397141 17574794282 43936985705 87873971410