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70886025 = 3252745007
BaseRepresentation
bin1000011100110…
…10001010001001
311221101101100100
410032122022021
5121121323100
611011200013
71520343540
oct416321211
9157341310
1070886025
11370167a1
121b8a6009
13118bbbc2
1495b3157
156353400
hex439a289

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".

Divisors: 1 3 5 7 9 15 21 25 35 45 63 75 105 175 225 315 525 1575 45007 135021 225035 315049 405063 675105 945147 1125175 1575245 2025315 2835441 3375525 4725735 7876225 10126575 14177205 23628675 70886025