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70931016 = 23321375781
BaseRepresentation
bin1000011101001…
…01001001001000
311221110200001200
410032211021020
5121124243031
611012144200
71520621652
oct416451110
9157420050
1070931016
1137047582
121b908060
1311906520
1495c56d2
1563618e6
hex43a5248

70931016 has 48 divisors (see below), whose sum is σ = 206884860. Its totient is φ = 21824640.

The previous prime is 70930999. The next prime is 70931017. The reversal of 70931016 is 61013907.

It can be written as a sum of positive squares in 2 ways, for example, as 62252100 + 8678916 = 7890^2 + 2946^2 .

It is not an unprimeable number, because it can be changed into a prime (70931017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36955 + ... + 38826.

Almost surely, 270931016 is an apocalyptic number.

It is an amenable number.

70931016 is an abundant number, since it is smaller than the sum of its proper divisors (135953844).

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

70931016 is a wasteful number, since it uses less digits than its factorization.

70931016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75806 (or 75799 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 70931016 is about 8422.0553310935. The cubic root of 70931016 is about 413.9476234236.

The spelling of 70931016 in words is "seventy million, nine hundred thirty-one thousand, sixteen".

Divisors: 1 2 3 4 6 8 9 12 13 18 24 26 36 39 52 72 78 104 117 156 234 312 468 936 75781 151562 227343 303124 454686 606248 682029 909372 985153 1364058 1818744 1970306 2728116 2955459 3940612 5456232 5910918 7881224 8866377 11821836 17732754 23643672 35465508 70931016