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70871270 = 2531228617
BaseRepresentation
bin1000011100101…
…10100011100110
311221100122002212
410032112203212
5121120340040
611011003422
71520252531
oct416264346
9157318085
1070871270
11370066a8
121b899572
13118b5282
1495aba18
15634dd65
hex43968e6

70871270 has 16 divisors (see below), whose sum is σ = 131683968. Its totient is φ = 27433920.

The previous prime is 70871261. The next prime is 70871287. The reversal of 70871270 is 7217807.

It is a super-2 number, since 2×708712702 = 10045473822825800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113999 + ... + 114618.

It is an arithmetic number, because the mean of its divisors is an integer number (8230248).

Almost surely, 270871270 is an apocalyptic number.

70871270 is a deficient number, since it is larger than the sum of its proper divisors (60812698).

70871270 is a wasteful number, since it uses less digits than its factorization.

70871270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228655.

The product of its (nonzero) digits is 5488, while the sum is 32.

The square root of 70871270 is about 8418.5075874528. The cubic root of 70871270 is about 413.8313665152.

The spelling of 70871270 in words is "seventy million, eight hundred seventy-one thousand, two hundred seventy".

Divisors: 1 2 5 10 31 62 155 310 228617 457234 1143085 2286170 7087127 14174254 35435635 70871270