Base | Representation |
---|---|
bin | 1010010111111… |
… | …11001110101000 |
3 | 20001202111212021 |
4 | 11023333032220 |
5 | 134234404043 |
6 | 12345154224 |
7 | 2104505560 |
oct | 513771650 |
9 | 201674767 |
10 | 87028648 |
11 | 45141a03 |
12 | 2518b974 |
13 | 15051655 |
14 | b7b5da0 |
15 | 79913ed |
hex | 52ff3a8 |
87028648 has 16 divisors (see below), whose sum is σ = 186490080. Its totient is φ = 37297968.
The previous prime is 87028621. The next prime is 87028657. The reversal of 87028648 is 84682078.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776986 + ... + 777097.
It is an arithmetic number, because the mean of its divisors is an integer number (11655630).
Almost surely, 287028648 is an apocalyptic number.
It is an amenable number.
87028648 is an abundant number, since it is smaller than the sum of its proper divisors (99461432).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87028648 is a wasteful number, since it uses less digits than its factorization.
87028648 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1554096 (or 1554092 counting only the distinct ones).
The product of its (nonzero) digits is 172032, while the sum is 43.
The square root of 87028648 is about 9328.9146206834. The cubic root of 87028648 is about 443.1533930971.
The spelling of 87028648 in words is "eighty-seven million, twenty-eight thousand, six hundred forty-eight".
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