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68914144 = 2513212743
BaseRepresentation
bin1000001101110…
…00101111100000
311210200012102201
410012320233200
5120120223034
610501022544
71464521605
oct406705740
9153605381
1068914144
113599a242
121b0b4a54
131137b500
14921c6ac
1560b4014
hex41b8be0

68914144 has 36 divisors (see below), whose sum is σ = 146925576. Its totient is φ = 31804032.

The previous prime is 68914133. The next prime is 68914193. The reversal of 68914144 is 44141986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 964 + ... + 11779.

It is an arithmetic number, because the mean of its divisors is an integer number (4081266).

Almost surely, 268914144 is an apocalyptic number.

It is an amenable number.

68914144 is an abundant number, since it is smaller than the sum of its proper divisors (78011432).

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

68914144 is a wasteful number, since it uses less digits than its factorization.

68914144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12779 (or 12758 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 68914144 is about 8301.4543304171. The cubic root of 68914144 is about 409.9864044669.

The spelling of 68914144 in words is "sixty-eight million, nine hundred fourteen thousand, one hundred forty-four".

Divisors: 1 2 4 8 13 16 26 32 52 104 169 208 338 416 676 1352 2704 5408 12743 25486 50972 101944 165659 203888 331318 407776 662636 1325272 2153567 2650544 4307134 5301088 8614268 17228536 34457072 68914144