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87028882077 = 374339043913
BaseRepresentation
bin101000100001101010…
…0110101101010011101
322022122012012021112210
41101003110311222131
52411213343211302
6103551442551033
76200441202114
oct1210324655235
9268565167483
1087028882077
11339aa598235
1214a49968479
13828c410c37
1442d8492c7b
1523e55e066c
hex1443535a9d

87028882077 has 8 divisors (see below), whose sum is σ = 116194688064. Its totient is φ = 57941165408.

The previous prime is 87028882069. The next prime is 87028882079. The reversal of 87028882077 is 77028882078.

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 87028882077 - 23 = 87028882069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87028882079) 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, 19519728 + ... + 19524185.

It is an arithmetic number, because the mean of its divisors is an integer number (14524336008).

Almost surely, 287028882077 is an apocalyptic number.

It is an amenable number.

87028882077 is a deficient number, since it is larger than the sum of its proper divisors (29165805987).

87028882077 is a wasteful number, since it uses less digits than its factorization.

87028882077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39044659.

The product of its (nonzero) digits is 5619712, while the sum is 57.

Subtracting from 87028882077 its reverse (77028882078), we obtain a palindrome (9999999999).

The spelling of 87028882077 in words is "eighty-seven billion, twenty-eight million, eight hundred eighty-two thousand, seventy-seven".

Divisors: 1 3 743 2229 39043913 117131739 29009627359 87028882077