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75040672 = 257521643
BaseRepresentation
bin1000111100100…
…00011110100000
312020012110110011
410132100132200
5123202300142
611240214304
71600556320
oct436203640
9166173404
1075040672
11393a4193
122116a394
1312714c85
149d75280
1568c4417
hex47907a0

75040672 has 48 divisors (see below), whose sum is σ = 169428672. Its totient is φ = 32048640.

The previous prime is 75040663. The next prime is 75040687. The reversal of 75040672 is 27604057.

It is a super-3 number, since 3×750406723 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 7 ways as a sum of consecutive naturals, for example, 116383 + ... + 117025.

It is an arithmetic number, because the mean of its divisors is an integer number (3529764).

Almost surely, 275040672 is an apocalyptic number.

It is an amenable number.

75040672 is an abundant number, since it is smaller than the sum of its proper divisors (94388000).

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

75040672 is a wasteful number, since it uses less digits than its factorization.

75040672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 75040672 is about 8662.6019185924. The cubic root of 75040672 is about 421.7925501937.

The spelling of 75040672 in words is "seventy-five million, forty thousand, six hundred seventy-two".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 521 643 1042 1286 2084 2572 3647 4168 4501 5144 7294 8336 9002 10288 14588 16672 18004 20576 29176 36008 58352 72016 116704 144032 335003 670006 1340012 2345021 2680024 4690042 5360048 9380084 10720096 18760168 37520336 75040672