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70849140 = 22351180819
BaseRepresentation
bin1000011100100…
…01001001110100
311221022111202020
410032101021310
5121114133030
611010313140
71520131155
oct416211164
9157274666
1070849140
1136aa100a
121b8887b0
13118a818b
1495a392c
156347510
hex4391274

70849140 has 24 divisors (see below), whose sum is σ = 198377760. Its totient is φ = 18893088.

The previous prime is 70849111. The next prime is 70849151. The reversal of 70849140 is 4194807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590350 + ... + 590469.

It is an arithmetic number, because the mean of its divisors is an integer number (8265740).

Almost surely, 270849140 is an apocalyptic number.

It is an amenable number.

70849140 is an abundant number, since it is smaller than the sum of its proper divisors (127528620).

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

70849140 is a wasteful number, since it uses less digits than its factorization.

70849140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180831 (or 1180829 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 70849140 is about 8417.1931188491. The cubic root of 70849140 is about 413.7882882150.

The spelling of 70849140 in words is "seventy million, eight hundred forty-nine thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 1180819 2361638 3542457 4723276 5904095 7084914 11808190 14169828 17712285 23616380 35424570 70849140