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87282487761 = 374156308941
BaseRepresentation
bin101000101001001110…
…0010001000111010001
322100021212101210010220
41101102130101013101
52412223304102021
6104032542343253
76206640622230
oct1212234210721
9270255353126
1087282487761
113401a763a07
1214aba88ab29
1382ccb16881
14432002ab17
15240c9d7cc6
hex14527111d1

87282487761 has 8 divisors (see below), whose sum is σ = 133001886144. Its totient is φ = 49875707280.

The previous prime is 87282487727. The next prime is 87282487807. The reversal of 87282487761 is 16778428278.

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

It is not a de Polignac number, because 87282487761 - 215 = 87282454993 is a prime.

It is a super-2 number, since 2×872824877612 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87282487695 and 87282487704.

It is not an unprimeable number, because it can be changed into a prime (87282487361) 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, 2078154450 + ... + 2078154491.

It is an arithmetic number, because the mean of its divisors is an integer number (16625235768).

Almost surely, 287282487761 is an apocalyptic number.

It is an amenable number.

87282487761 is a deficient number, since it is larger than the sum of its proper divisors (45719398383).

87282487761 is a wasteful number, since it uses less digits than its factorization.

87282487761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4156308951.

The product of its digits is 16859136, while the sum is 60.

The spelling of 87282487761 in words is "eighty-seven billion, two hundred eighty-two million, four hundred eighty-seven thousand, seven hundred sixty-one".

Divisors: 1 3 7 21 4156308941 12468926823 29094162587 87282487761