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70120284 = 223132319543
BaseRepresentation
bin1000010110111…
…11001101011100
311212221110221120
410023133031130
5120422322114
610542530540
71511004213
oct413371534
9155843846
1070120284
1136643453
121b596a50
13116b14c0
14945407a
1562515a9
hex42df35c

70120284 has 48 divisors (see below), whose sum is σ = 183869952. Its totient is φ = 20636352.

The previous prime is 70120277. The next prime is 70120301. The reversal of 70120284 is 48202107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6184 + ... + 13359.

It is an arithmetic number, because the mean of its divisors is an integer number (3830624).

Almost surely, 270120284 is an apocalyptic number.

It is an amenable number.

70120284 is an abundant number, since it is smaller than the sum of its proper divisors (113749668).

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

70120284 is a wasteful number, since it uses less digits than its factorization.

70120284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19586 (or 19584 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 70120284 is about 8373.7855238834. The cubic root of 70120284 is about 412.3644542714.

The spelling of 70120284 in words is "seventy million, one hundred twenty thousand, two hundred eighty-four".

Divisors: 1 2 3 4 6 12 13 23 26 39 46 52 69 78 92 138 156 276 299 598 897 1196 1794 3588 19543 39086 58629 78172 117258 234516 254059 449489 508118 762177 898978 1016236 1348467 1524354 1797956 2696934 3048708 5393868 5843357 11686714 17530071 23373428 35060142 70120284