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68524470 = 23257108769
BaseRepresentation
bin1000001010110…
…01100110110110
311202221101220100
410011121212312
5120020240340
610444414530
71461306540
oct405314666
9152841810
1068524470
11357534a3
121ab47446
1311273031
14915a690
156038830
hex41599b6

68524470 has 48 divisors (see below), whose sum is σ = 203617440. Its totient is φ = 15662592.

The previous prime is 68524453. The next prime is 68524471. The reversal of 68524470 is 7442586.

68524470 is a `hidden beast` number, since 68 + 524 + 4 + 70 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68524471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53755 + ... + 55014.

It is an arithmetic number, because the mean of its divisors is an integer number (4242030).

Almost surely, 268524470 is an apocalyptic number.

68524470 is an abundant number, since it is smaller than the sum of its proper divisors (135092970).

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

68524470 is a wasteful number, since it uses less digits than its factorization.

68524470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108789 (or 108786 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 68524470 is about 8277.9508333887. The cubic root of 68524470 is about 409.2121893612.

The spelling of 68524470 in words is "sixty-eight million, five hundred twenty-four thousand, four hundred seventy".

Divisors: 1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 45 63 70 90 105 126 210 315 630 108769 217538 326307 543845 652614 761383 978921 1087690 1522766 1631535 1957842 2284149 3263070 3806915 4568298 4894605 6852447 7613830 9789210 11420745 13704894 22841490 34262235 68524470