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75486380 = 22573149347
BaseRepresentation
bin1000111111111…
…01010010101100
312021001002211212
410133331102230
5123311031010
611253533552
71604423624
oct437752254
9167032755
1075486380
1139679042
12213442b8
131283cac8
14a04d884
156961505
hex47fd4ac

75486380 has 48 divisors (see below), whose sum is σ = 162237600. Its totient is φ = 29495808.

The previous prime is 75486379. The next prime is 75486403. The reversal of 75486380 is 8368457.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217367 + ... + 217713.

It is an arithmetic number, because the mean of its divisors is an integer number (3379950).

Almost surely, 275486380 is an apocalyptic number.

It is an amenable number.

75486380 is an abundant number, since it is smaller than the sum of its proper divisors (86751220).

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

75486380 is a wasteful number, since it uses less digits than its factorization.

75486380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 75486380 is about 8688.2898202120. The cubic root of 75486380 is about 422.6259885930.

The spelling of 75486380 in words is "seventy-five million, four hundred eighty-six thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 73 146 149 292 298 347 365 596 694 730 745 1388 1460 1490 1735 2980 3470 6940 10877 21754 25331 43508 50662 51703 54385 101324 103406 108770 126655 206812 217540 253310 258515 506620 517030 1034060 3774319 7548638 15097276 18871595 37743190 75486380