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75067980 = 223513157613
BaseRepresentation
bin1000111100101…
…11001001001100
312020020211220120
410132113021030
5123204133410
611240544540
71601032041
oct436271114
9166224816
1075067980
1139412759
1221182150
1312724530
149d811c8
1568cc570
hex479724c

75067980 has 96 divisors (see below), whose sum is σ = 228172224. Its totient is φ = 18330624.

The previous prime is 75067963. The next prime is 75068011. The reversal of 75067980 is 8976057.

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 31 ways as a sum of consecutive naturals, for example, 122154 + ... + 122766.

It is an arithmetic number, because the mean of its divisors is an integer number (2376794).

Almost surely, 275067980 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 75067980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114086112).

75067980 is an abundant number, since it is smaller than the sum of its proper divisors (153104244).

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

75067980 is a wasteful number, since it uses less digits than its factorization.

75067980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 75067980 is about 8664.1779760113. The cubic root of 75067980 is about 421.8437087354.

The spelling of 75067980 in words is "seventy-five million, sixty-seven thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 157 195 260 314 390 471 613 628 780 785 942 1226 1570 1839 1884 2041 2355 2452 3065 3140 3678 4082 4710 6123 6130 7356 7969 8164 9195 9420 10205 12246 12260 15938 18390 20410 23907 24492 30615 31876 36780 39845 40820 47814 61230 79690 95628 96241 119535 122460 159380 192482 239070 288723 384964 478140 481205 577446 962410 1154892 1251133 1443615 1924820 2502266 2887230 3753399 5004532 5774460 6255665 7506798 12511330 15013596 18766995 25022660 37533990 75067980