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70281568 = 2572111487
BaseRepresentation
bin1000011000001…
…10100101100000
311220020200012001
410030012211200
5120443002233
610550213344
71512245350
oct414064540
9156220161
1070281568
1136743645
121b654254
1311739a36
149496b60
15628427d
hex4306960

70281568 has 48 divisors (see below), whose sum is σ = 158989824. Its totient is φ = 29957760.

The previous prime is 70281539. The next prime is 70281569. The reversal of 70281568 is 86518207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70281569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46521 + ... + 48007.

It is an arithmetic number, because the mean of its divisors is an integer number (3312288).

Almost surely, 270281568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70281568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79494912).

70281568 is an abundant number, since it is smaller than the sum of its proper divisors (88708256).

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

70281568 is a wasteful number, since it uses less digits than its factorization.

70281568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715 (or 1707 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 70281568 is about 8383.4102846038. The cubic root of 70281568 is about 412.6803726632.

The spelling of 70281568 in words is "seventy million, two hundred eighty-one thousand, five hundred sixty-eight".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 211 224 422 844 1477 1487 1688 2954 2974 3376 5908 5948 6752 10409 11816 11896 20818 23632 23792 41636 47264 47584 83272 166544 313757 333088 627514 1255028 2196299 2510056 4392598 5020112 8785196 10040224 17570392 35140784 70281568