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67430620 = 22519612909
BaseRepresentation
bin1000000010011…
…10100011011100
311200212211102101
410001032203130
5114230234440
610405134444
71446102505
oct401164334
9150784371
1067430620
1135076694
121a6ba424
1310c7c19a
148d53bac
155dbe69a
hex404e8dc

67430620 has 48 divisors (see below), whose sum is σ = 151552800. Its totient is φ = 25125120.

The previous prime is 67430599. The next prime is 67430659. The reversal of 67430620 is 2603476.

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 15 ways as a sum of consecutive naturals, for example, 21726 + ... + 24634.

It is an arithmetic number, because the mean of its divisors is an integer number (3157350).

Almost surely, 267430620 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 67430620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75776400).

67430620 is an abundant number, since it is smaller than the sum of its proper divisors (84122180).

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

67430620 is a wasteful number, since it uses less digits than its factorization.

67430620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2998 (or 2996 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 67430620 is about 8211.6149446988. The cubic root of 67430620 is about 407.0230937078.

The spelling of 67430620 in words is "sixty-seven million, four hundred thirty thousand, six hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 61 76 95 122 190 244 305 380 610 1159 1220 2318 2909 4636 5795 5818 11590 11636 14545 23180 29090 55271 58180 110542 177449 221084 276355 354898 552710 709796 887245 1105420 1774490 3371531 3548980 6743062 13486124 16857655 33715310 67430620