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89991728763 = 3199203171553
BaseRepresentation
bin101001111001111101…
…1001100111001111011
322121021200022111010020
41103303323030321323
52433300340310023
6105201443021523
76334036034106
oct1236373147173
9277250274106
1089991728763
113518aa91862
121553606a8a3
1386421b7561
1444d9b8773d
15251a795de3
hex14f3ecce7b

89991728763 has 16 divisors (see below), whose sum is σ = 126318641280. Its totient is φ = 56830374144.

The previous prime is 89991728759. The next prime is 89991728773. The reversal of 89991728763 is 36782719998.

It is not a de Polignac number, because 89991728763 - 22 = 89991728759 is a prime.

It is a super-2 number, since 2×899917287632 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89991728773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438795 + ... + 610347.

It is an arithmetic number, because the mean of its divisors is an integer number (7894915080).

Almost surely, 289991728763 is an apocalyptic number.

89991728763 is a deficient number, since it is larger than the sum of its proper divisors (36326912517).

89991728763 is a wasteful number, since it uses less digits than its factorization.

89991728763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180778.

The product of its digits is 82301184, while the sum is 69.

The spelling of 89991728763 in words is "eighty-nine billion, nine hundred ninety-one million, seven hundred twenty-eight thousand, seven hundred sixty-three".