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70839712 = 253171411
BaseRepresentation
bin1000011100011…
…10110110100000
311221022000211001
410032032312200
5121113332322
611010201344
71520061526
oct416166640
9157260731
1070839712
1136a94a19
121b883254
13118a3ab8
1495a0316
156344827
hex438eda0

70839712 has 24 divisors (see below), whose sum is σ = 143966592. Its totient is φ = 34276800.

The previous prime is 70839709. The next prime is 70839739. The reversal of 70839712 is 21793807.

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, 34714 + ... + 36697.

It is an arithmetic number, because the mean of its divisors is an integer number (5998608).

Almost surely, 270839712 is an apocalyptic number.

It is an amenable number.

70839712 is an abundant number, since it is smaller than the sum of its proper divisors (73126880).

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

70839712 is a wasteful number, since it uses less digits than its factorization.

70839712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71452 (or 71444 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 70839712 is about 8416.6330560385. The cubic root of 70839712 is about 413.7699329274.

The spelling of 70839712 in words is "seventy million, eight hundred thirty-nine thousand, seven hundred twelve".

Divisors: 1 2 4 8 16 31 32 62 124 248 496 992 71411 142822 285644 571288 1142576 2213741 2285152 4427482 8854964 17709928 35419856 70839712