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75064960 = 275532213
BaseRepresentation
bin1000111100101…
…10011010000000
312020020200202201
410132112122000
5123204034320
611240522544
71601020165
oct436263200
9166220681
1075064960
1139410463
1221180454
1312723049
149d8006c
1568cb70a
hex4796680

75064960 has 64 divisors (see below), whose sum is σ = 182920680. Its totient is φ = 29446144.

The previous prime is 75064949. The next prime is 75064961. The reversal of 75064960 is 6946057.

It can be written as a sum of positive squares in 4 ways, for example, as 75064896 + 64 = 8664^2 + 8^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (75064961) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32814 + ... + 35026.

Almost surely, 275064960 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 75064960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91460340).

75064960 is an abundant number, since it is smaller than the sum of its proper divisors (107855720).

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

75064960 is a wasteful number, since it uses less digits than its factorization.

75064960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285 (or 2273 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 75064960 is about 8664.0036934433. The cubic root of 75064960 is about 421.8380517070.

The spelling of 75064960 in words is "seventy-five million, sixty-four thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 53 64 80 106 128 160 212 265 320 424 530 640 848 1060 1696 2120 2213 3392 4240 4426 6784 8480 8852 11065 16960 17704 22130 33920 35408 44260 70816 88520 117289 141632 177040 234578 283264 354080 469156 586445 708160 938312 1172890 1416320 1876624 2345780 3753248 4691560 7506496 9383120 15012992 18766240 37532480 75064960