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70085970 = 2325778733
BaseRepresentation
bin1000010110101…
…10110101010010
311212212201212200
410023112311102
5120420222340
610542104030
71510502163
oct413266522
9155781780
1070085970
113661a699
121b57b016
131169b9b6
14944576a
156246330
hex42d6d52

70085970 has 24 divisors (see below), whose sum is σ = 182223756. Its totient is φ = 18689568.

The previous prime is 70085969. The next prime is 70085993. The reversal of 70085970 is 7958007.

It can be written as a sum of positive squares in 2 ways, for example, as 67026969 + 3059001 = 8187^2 + 1749^2 .

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 11 ways as a sum of consecutive naturals, for example, 389277 + ... + 389456.

Almost surely, 270085970 is an apocalyptic number.

70085970 is an abundant number, since it is smaller than the sum of its proper divisors (112137786).

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

70085970 is a wasteful number, since it uses less digits than its factorization.

70085970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778746 (or 778743 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 70085970 is about 8371.7363790315. The cubic root of 70085970 is about 412.2971785283.

The spelling of 70085970 in words is "seventy million, eighty-five thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 778733 1557466 2336199 3893665 4672398 7008597 7787330 11680995 14017194 23361990 35042985 70085970