Base | Representation |
---|---|
bin | 1000011100110… |
… | …10001010001001 |
3 | 11221101101100100 |
4 | 10032122022021 |
5 | 121121323100 |
6 | 11011200013 |
7 | 1520343540 |
oct | 416321211 |
9 | 157341310 |
10 | 70886025 |
11 | 370167a1 |
12 | 1b8a6009 |
13 | 118bbbc2 |
14 | 95b3157 |
15 | 6353400 |
hex | 439a289 |
70886025 has 36 divisors (see below), whose sum is σ = 145105792. Its totient is φ = 32404320.
The previous prime is 70886003. The next prime is 70886027. The reversal of 70886025 is 52068807.
It is not a de Polignac number, because 70886025 - 27 = 70885897 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (70886027) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20929 + ... + 24078.
Almost surely, 270886025 is an apocalyptic number.
70886025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.
It is an amenable number.
70886025 is an abundant number, since it is smaller than the sum of its proper divisors (74219767).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
70886025 is a wasteful number, since it uses less digits than its factorization.
70886025 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 45030 (or 45022 counting only the distinct ones).
The product of its (nonzero) digits is 26880, while the sum is 36.
The square root of 70886025 is about 8419.3838848220. The cubic root of 70886025 is about 413.8600836438.
The spelling of 70886025 in words is "seventy million, eight hundred eighty-six thousand, twenty-five".
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