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78028060 = 225112191697
BaseRepresentation
bin1001010011010…
…01110100011100
312102211020101011
410221221310130
5124433344220
611424225004
71635141025
oct451516434
9172736334
1078028060
1140054700
122216b164
131321c966
14a511c4c
156cb465a
hex4a69d1c

78028060 has 72 divisors (see below), whose sum is σ = 189700560. Its totient is φ = 26864640.

The previous prime is 78028039. The next prime is 78028073. The reversal of 78028060 is 6082087.

It is a congruent number.

It is an unprimeable number.

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, 45132 + ... + 46828.

It is an arithmetic number, because the mean of its divisors is an integer number (2634730).

Almost surely, 278028060 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 78028060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94850280).

78028060 is an abundant number, since it is smaller than the sum of its proper divisors (111672500).

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

78028060 is a wasteful number, since it uses less digits than its factorization.

78028060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747 (or 1734 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 78028060 is about 8833.3493081617. The cubic root of 78028060 is about 427.3170974129.

The spelling of 78028060 in words is "seventy-eight million, twenty-eight thousand, sixty".

Divisors: 1 2 4 5 10 11 19 20 22 38 44 55 76 95 110 121 190 209 220 242 380 418 484 605 836 1045 1210 1697 2090 2299 2420 3394 4180 4598 6788 8485 9196 11495 16970 18667 22990 32243 33940 37334 45980 64486 74668 93335 128972 161215 186670 205337 322430 354673 373340 410674 644860 709346 821348 1026685 1418692 1773365 2053370 3546730 3901403 4106740 7093460 7802806 15605612 19507015 39014030 78028060