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70043660 = 2253502183
BaseRepresentation
bin1000010110011…
…00100000001100
311212210120211122
410023030200030
5120412344120
610541140112
71510234631
oct413144014
9155716748
1070043660
11365a0925
121b55a638
131168566b
149434188
156238a25
hex42cc80c

70043660 has 12 divisors (see below), whose sum is σ = 147091728. Its totient is φ = 28017456.

The previous prime is 70043657. The next prime is 70043681. The reversal of 70043660 is 6634007.

It is a super-2 number, since 2×700436602 = 9812228612391200, which contains 22 as substring.

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, 1751072 + ... + 1751111.

It is an arithmetic number, because the mean of its divisors is an integer number (12257644).

Almost surely, 270043660 is an apocalyptic number.

It is an amenable number.

70043660 is an abundant number, since it is smaller than the sum of its proper divisors (77048068).

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

70043660 is a wasteful number, since it uses less digits than its factorization.

70043660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502192 (or 3502190 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 70043660 is about 8369.2090426754. The cubic root of 70043660 is about 412.2141956569.

Adding to 70043660 its reverse (6634007), we get a palindrome (76677667).

The spelling of 70043660 in words is "seventy million, forty-three thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 3502183 7004366 14008732 17510915 35021830 70043660