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70681230 = 2325785347
BaseRepresentation
bin1000011011010…
…00001010001110
311220222222102100
410031220022032
5121043244410
611002535530
71515531504
oct415501216
9156888370
1070681230
1136996944
121b8075a6
1311849919
14955c674
1563128c0
hex436828e

70681230 has 24 divisors (see below), whose sum is σ = 183771432. Its totient is φ = 18848304.

The previous prime is 70681213. The next prime is 70681241. The reversal of 70681230 is 3218607.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 70681194 and 70681203.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 392584 + ... + 392763.

It is an arithmetic number, because the mean of its divisors is an integer number (7657143).

Almost surely, 270681230 is an apocalyptic number.

70681230 is an abundant number, since it is smaller than the sum of its proper divisors (113090202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70681230 is a wasteful number, since it uses less digits than its factorization.

70681230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785360 (or 785357 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 70681230 is about 8407.2129745832. The cubic root of 70681230 is about 413.4611416817.

Adding to 70681230 its reverse (3218607), we get a palindrome (73899837).

The spelling of 70681230 in words is "seventy million, six hundred eighty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 785347 1570694 2356041 3926735 4712082 7068123 7853470 11780205 14136246 23560410 35340615 70681230